Relación localización-tipo histológico del adenocarcinoma gástrico en pacientes del IAHULA Mérida Venezuela. Repercusiones quirúrgicas / Relation between location and histology in adenocarcinoma gastric patients at IAHULA Mérida Venezuela. Surgical implications

El cáncer gástrico es una neoplasia común en el mundo, su patrón anatómico cambió, con diferencias entre grupos poblacionales. Es importante establecer la relación entre la localización de la lesión y su histología, planteando exigencias quirúrgicas diferentes. Objetivo: describir el comportamiento de la patología en Mérida Venezuela y los procedimientos quirúrgicos empleados en su manejo. Método : investigación observacional transversal en pacientes del IAHULA con adenocarcinoma gástrico, durante el periodo enero 2016 hasta diciembre 2020,Resultados : en relación a su localización anatómica la distribución fue: 47 antro pilórico, 33 cardias y el resto en el cuerpo gástrico. Las lesiones difusas o con células en anillo de sello predominaron en las 3 ubicaciones del estómago, pero con cifras similares para aquellas en el cardias/fundus, a diferencia de las lesiones de la región de antro/píloro donde hubo 36 de tipo difuso y 11 de tipo intestinal. Las lesiones antro pilóricas se asociaron con la resección oncológica mediante gastrectomía subtotal (p 0,000). No se detectó asociación entre la localización de la lesión y la clasificación propuesta por Laurent (p 0,073).Conclusión : a pesar de la importancia de la ubicación de la lesión y el tipo histológico para fines quirúrgicos, no se encontró la referida relación, lo que resalta la heterogeneidad en la presentación del adenocarcinoma gástrico en la localidad(AU)

Gastric cancer is a common cancer worldwide; his anatomic pattern did change with differences between populations. It is important to know the relation between localization and histology, because of different surgical exigencies.Objective: in order to determinate the behavior of gastric cancer in Merida, Venezuela. Methods: transversal and observational study, with IAHULA gastric adenocarcinoma patients between January 2016 to December 2020. Results : the anatomical localization distribution was: 47 antro pyloric, 33 at cardias and the other cases at the gastric body. Histological distribution: Diffuses or signet ring cells adenocarcinomas were most common in every gastric localization but similar numbers to the proximal location were placed, different results at antro/pyloric with 36 diffuses and 11 intestinal according the Laurent classification. The antro/pyloric cases had significant relation with resection of subtotal gastrectomy (p 0,000). There was not association between the gastric location and the Laurent classification (p 0,073).Conclusion : no matter the importance described to the initial anatomical location and the histology type talking about surgical implications, there was no relation between both factors, so there is a big heterogeneity in gastric adenocarcinoma in Merida, Venezuela(AU)

Morbimortalidad de pacientes sometidos a cirugía bariátrica en el Hospital Nacional de Itauguá: experiencia años 2017 a 2021 / Morbidity and mortality of patients undergoing bariatric surgery at the Hospital Nacional Itauguá: experience years 2017 to 2021

Introducción: la prevalencia de sobrepeso y obesidad en Paraguay es del 58 % en la población adulta, y 34,5 % en niños y adolescentes. Para enfrentar esta situación existen varios tratamientos, siendo el quirúrgico el medio terapéutico actual que permite obtener la mayor pérdida de peso y por tiempo más prolongado. Objetivo: describir la morbimortalidad de las cirugías bariátricas en el Hospital Nacional de Itauguá en el periodo comprendido entre enero 2017 y setiembre 2021. Metodología: estudio descriptivo, observacional, retrospectivo de corte transversal, con un muestreo no probabilístico de casos consecutivos de todos los pacientes con diagnóstico de obesidad que recibieron tratamiento quirúrgico entre enero 2017 a setiembre del 2021. Se recabaron 126 historias clínicas, 121 de ellos cumplieron los criterios de inclusión. Resultados: de 121 pacientes, 82 % eran mujeres y 18 % hombres, con una edad media de 37 años. Se realizó una gastrectomía vertical en 68 % y by-pass gástrico en 21 %, con una estadía hospitalaria promedio de 61 h. La fístula fue la complicación postoperatoria más frecuente (7 %) seguida de la dehiscencia de anastomosis (2 %). La morbilidad de la cirugía bariátrica fue 11 %, con una mortalidad del 1 %. Conclusión: la morbilidad de la cirugía bariátrica en el Hospital Nacional de Itauguá es baja, con una mortalidad aceptable. La técnica más realizada es la gastrectomía vertical y la fístula es la complicación más común.

Introduction: the prevalence of overweight and obesity in Paraguay is 58 % in the adult population, and 34.5 % in children and adolescents. There are several treatments to deal with these conditions, with surgery being the current therapeutic option that allows for the greatest weight loss and for the longest time. Objective: to describe the morbidity and mortality of bariatric procedures at the Hospital Nacional, Itauguá from January 2017 to September 2021. Metodology: descriptive, observational, retrospective cross-sectional study, with a non- probabilistic sampling of consecutive cases of all patients diagnosed with obesity who received surgical treatment between January 2017 and September, 2021. 126 medical records were collected, 121 of them met the inclusion criteria. Results: of 121 patients, 82 % were women and 18 % men, with a mean age of 37 years. Vertical gastrectomy was performed in 68 % and gastric bypass in 21 %, with an average hospital stay of 61 hours. Fistula was the most frequent postoperative complication (7 %) followed by anastomosis dehiscence (2 %). The morbidity of bariatric surgery was 11 %, with a mortality of 1 %. Conclusion: the morbidity of bariatric surgery at the Hospital Nacional, Itauguá is low, with an acceptable mortality rate. The most common technique is sleeve gastrectomy and fistula is the most common complication.

Calidad de vida posterior a gastrectomía total laparoscópica versus abierta en cáncer gástrico / Quality of life after -laparoscopic versus open total gastrectomy in gastric cancer

Resumen Introducción: En los últimos años, la gastrectomía laparoscópica ha aparecido como una técnica quirúrgica con resultados oncológicos comparables a la técnica abierta, pero existe poca evidencia en cuanto a la calidad de vida posoperatoria de estos pacientes. Objetivo: Evaluar la calidad de vida posoperatoria de pacientes sometidos a gastrectomía total laparoscópica (GTL) en comparación a gastrectomia total abierta (GTA) en cáncer gástrico. Materiales y Método: Estudio retrospectivo, observacional en Hospital Militar de Santiago, entre enero de 2015 y junio de 2020. Se les aplicó 2 encuestas validadas para Chile: EORTC QLQ-30 y EORTC QLQ-OG25. Resultados: Se obtuvieron 60 pacientes; 30 sometidos a GTL y 30 a GTA. Promedio edad fue 66,3 ± 11 años para GTL y 68,2 ± 11 años en GTA (p = 0,5). Se obtuvo un score en GTL versus GTA: global 83,3 y 80,2 (p = 0,6), sintomático 17,1 y 25,5 (p = 0,2) y score funcional 87,9 y 70,9 (p = 0,03). Posterior a eso obtuvimos en funcionalidad GTL versus GTA; física 92,2 versus GTA 73,1 (p = 0,04), emocional 84,1 versus 78,5 (p = 0,6), cognitiva 84,9 versus 79,0 (p = 0,3) y social 80,9 versus 72,2 (p = 0,4). Al analizar síntomas destaco; fatiga 14,6 versus 33,1 (p = 0,04) y dolor 13,4 versus 24,3 (p = 0,05). Finalmente, en síntomas digestivos altos obtuvimos en disfagia 0,84 GTL versus 17,3 GTA (p = 0,04). Conclusión: La GTL logra resultados comparables a GTA en calidad de vida e incluso ofrece ventajas significativas en funcionalidad física como también en síntomas como dolor, fatiga y disfagia.

Introduction: In recent years, laparoscopic gastrectomy has appeared as a surgical technique with oncological results comparable to the open technique, but there is little evidence regarding the postoperative quality of life of these patients. Objective: To evaluate the postoperative quality of life of patients undergoing laparoscopic total gastrectomy (LTG) compared to open total gastrectomy (OTG) in gastric cancer. Materials and Method: Prospective, observational study at Hospital Militar of Santiago, between January 2015 and June 2020. Two surveys validated for Chile were applied: EORTC QLQ-30 and EORTC QLQ-OG25. Results: 60 patients were obtained; 30 subjected to LTG and 30 to OTG. Average age was 66.3 ± 11 years for LTG and 68.2 ± 11 years for OTG (p = 0.5). A score was obtained in LTG versus OTG: global 83.3 and 80.2 (p = 0.6), symptomatic 17.1 and 25.5 (p = 0.2) and functional score 87.9 and 70.9 (p = 0.03). After that we got LTG versus OTG functionality; physical 92.2 versus 73.1 (p = 0.04), emotional 84.1 versus 78.5 (p = 0.6), cognitive 84.9 versus 79.0 (p = 0.3) and social 80.9 versus 72.2 (p = 0.4). When analyzing symptoms I highlight; fatigue 14.6 versus 33.1 (p = 0.04) and pain 13.4 versus 24.3 (p = 0.05). Finally, in upper digestive symptoms, we obtained 0.84 LTG versus 17.3 OTG in dysphagia (p = 0.04). Conclusion: LTG achieves results comparable to OTG in quality of life and even offers significant advantages in physical functionality as well as symptoms such as pain, fatigue and dysphagia.

Características sociodemográficas e histopatológicas en pacientes con cáncer gástrico en una población con alto riesgo en Colombia / Sociodemographic and histopathological characteristics of patients with gastric cancer in a high-risk population in Colombia

Resumen Objetivo: describir las características sociodemográficas e histopatológicas en pacientes con diagnóstico de adenocarcinoma gástrico en la Clínica Oncológica Aurora, durante el período 2014-2017 en la ciudad de Pasto, Colombia. Métodos: se realizó un estudio descriptivo en una cohorte de 54 pacientes con diagnóstico de cáncer gástrico sometidos a gastrectomía durante los años 2014 a 2017. La información sociodemográfica se obtuvo a través de la historia clínica. El sistema de Sydney y la clasificación de Lauren se usaron para determinar las características histopatológicas. Resultados: la mayoría de los tumores se presentó en hombres mayores de 50 años (relación hombre mujer de 2,6:1). La ubicación predominante fue la región antropilórica. El histotipo tumoral más frecuente fue el intestinal (80%). La prevalencia de Helicobacter pylori en pacientes fue del 24,07% y fue mayor en el histotipo intestinal. La metaplasia intestinal fue la lesión premaligna más prevalente en todos los histotipos tumorales. Conclusiones: en el presente estudio se encontró que la edad mayor a 50 años y el sexo masculino son condiciones asociadas con el cáncer gástrico; hallazgo ya demostrado en estudios previos. Es perentorio avanzar en el mejoramiento de las condiciones de salud pública, control de la infección por H. pylori y tamizaje temprano de lesiones premalignas, pues son factores determinantes en la carcinogénesis de pacientes con carcinomas no cardiales e histotipos intestinales ubicados en la región antrocorporal. Aunque no se encontraron diferencias significativas entre los histotipos tumorales, el adenocarcinoma de tipo intestinal ubicado en la región antropilórica fue el diagnóstico más frecuente.

Abstract Objective: To describe the sociodemographic and histopathological characteristics of patients diagnosed with gastric adenocarcinoma at the Clínica Oncológica Aurora between 2014 and 2017 in the city of Pasto, Colombia. Methodology: A descriptive study was carried out in a cohort of 54 patients diagnosed with gastric cancer who underwent gastrectomy between 2014 and 2017. Sociodemographic information was taken from the medical records of the patients. The Sydney system and Lauren classification were used to determine histopathological characteristics. Results: Most tumors were found in men older than 50 years (with a male:female ratio of 2.6:1). The predominant location was the antropyloric region. The most frequent tumor histotype was intestinal (80%). The prevalence of Helicobacter pylori in patients was 24.07 % and it was most commonly found in the intestinal histotype. Intestinal metaplasia was the most prevalent premalignant lesion in all tumor histotypes. Conclusions: The present study found that the age of 50 and the male sex are conditions associated with gastric cancer. This finding has already been demonstrated in previous studies. Progress in improving public health conditions, controlling H. pylori infection, and early screening of premalignant lesions is imperative, as they are determining factors of carcinogenesis in patients with non-cardia carcinomas and intestinal histotypes located in the anthrocorporal region. Although no significant differences were found among tumor histotypes, intestinal adenocarcinoma in the antropyloric region was the most frequent diagnosis.

Sobrevida a 5 años de pacientes sometidos a gastrectomía por adenocarcinoma gástrico en el Hospital Naval Almirante Nef entre 2010-2015 / 5-year survival of patients undergoing gastrectomy for gastric adenocarcinoma at Hospital Naval Almirante Nef between 2010-2015

Resumen Introducción: El cáncer gástrico es de los tumores malignos más comunes en el mundo y es de alta prevalencia en Chile. La tasa de mortalidad anual es de 26/100.000 habitantes para hombres y 12/100.000 para mujeres. La cirugía es el tratamiento con mayor probabilidad de curación, prolonga la sobrevida global y libre de enfermedad. La sobrevida global a 5 años reportada a nivel mundial es cercana al 30%. No contamos con datos en la región de Valparaíso sobre la sobrevida en pacientes con cáncer gástrico. Objetivo: Caracterizar a los pacientes operados por adenocarcinoma y estimar su sobrevida a 5 años. Materiales y Método: Realizamos un estudio retrospectivo a partir de la revisión de fichas clínicas de pacientes sometidos a gastrectomía por adenocarcinoma gástrico. La variable principal analizada fue la sobrevida a 5 años. Resultados: Se incluyeron 69 pacientes, el promedio de sobrevida fue de 31,7 (DE 25,3) meses y la sobrevida fue de 46% a 5 años. Encontramos diferencia al comparar grados de compromiso ganglionar según TNM (p = 0,0001). Según estadio se obtuvo un valor P cercano a la significancia estadística (p = 0,083). Otras variables sugieren diferencia en sobrevida sin lograr significancia estadística. Discusión: Presentamos resultados similares a estudios nacionales, posicionándonos con mejores resultados que países de occidente, pero aún muy por debajo de la sobrevida reportada en Japón (> 70%). Conclusión: Logramos caracterizar acabadamente a los pacientes operados por adenocarcinoma, su sobrevida a 5 años, además de apoyar la asociación entre distintos grados de compromiso ganglionar.

Introduction: Gastric cancer is one of the most common cancers worldwide. It is highly prevalent in Chile, with a mortality rate of 26/100,000 inhabitants for men and 12/100,000 for women. Surgical resection remains the treatment of choice, it aims to improve the quality of life and prolong overall survival and disease-free survival. The 5-year survival rate reported worldwide is close to 30%. We do not have data on survival rates in Valparaíso for patients with gastric cancer. Aim: To characterize patients with gastric adenocarcinoma that underwent gastric resection and determine their survival rate at 5 years post gastrectomy. Materials and Method: We performed a retrospective descriptive review of medical records of patients who underwent gastrectomy for gastric adenocarcinoma. The main variable analyzed was the 5-year survival rate. Results: 69 patients were included; the average survival was 31.7 (SD 25.3) months and the survival rate at 5 years was 46%. A difference was found when comparing degrees of lymph node involvement according to TNM (p = 0.0001). Depending on the stage, we obtained a P value close to being statistically significant (p = 0.083). Other variables suggested differences in survival rates without achieving statistical significance. Discussion: We obtained similar results to national studies. We obtained better survival rates than western countries, however our results are still lower than those from Japan (> 70%). Conclusions: We were able to finely characterize patients with gastric adenocarcinoma who underwent gastrectomy, their 5-year survival rate, and also to support association between different degrees of lymph node involvement and survival rates.

Are there differences in laparoscopic gastrectomy morbidity and mortality between young and older? / Há diferenças na morbimortalidade da gastrectomia laparoscópica entre jovens e idosos?

ABSTRACT Background: Due to the longer life expectancy and consequently an increase in the elderly population, a higher incidence of gastric cancer is expected in this population in the coming decades. Aim: To compare the results of laparoscopic GC surgical treatment between individuals aged<65 years (group I) and ≥ 65 years (group II), according to clinical, surgical, and histopathological characteristics. Methods: A observational retrospective study was performed by analyzing medical charts of patients with gastric cancer undergoing total or subtotal laparoscopic gastrectomy for curative purposes by a single oncologic surgery team. Results: Thirty-six patients were included in each group. Regarding the ASA classification, 31% of the patients in group I was ASA 1, compared to 3.1% in group II. The mean number of concomitant medications in group II was statistically superior to group I (5±4.21 x 1.42±3.08, p<0.001). Subtotal gastrectomy was the most performed procedure in both groups (69.4% and 63.9% in groups I and II, respectively) due to the high prevalence of distal tumors in both groups, 54.4% group I and 52.9% group II. According to Lauren's classification, group I presented a predominance of diffuse tumors (50%) and group II the intestinal type (61.8%). There was no difference between the two groups regarding the number of resected lymph nodes and lymph node metastases and the days of hospitalization and mortality. Conclusion: Laparoscopic gastrectomy showed to be a safe procedure, without a statistical difference in morbidity, mortality, and hospitalization time between both groups.

RESUMO Racional: Devido à maior expectativa de vida, e consequentemente aumento da população de idosos, é esperada uma maior incidência de câncer gástrico nesta população nas próximas décadas. Objetivos: Comparar os resultados do tratamento cirúrgico por via laparoscópica do câncer gástrico entre pacientes com idade <65 anos (grupo I) e ≥65 anos (grupo II), de acordo com características clínicas, cirúrgicas e histopatológicas. Métodos: Foi realizado um estudo retrospectivo, observacional baseado na análise de prontuários médicos de pacientes com câncer gástrico, submetidos à gastrectomia total ou subtotal laparoscópica com finalidade curativa, por uma única equipe de cirurgia oncológica. Resultados: Foram avaliados 36 pacientes em cada grupo. Em relação à classificação ASA, 62,1% dos pacientes do grupo I eram ASA 1 comparado a 3.1% no grupo II. O número médio de medicações concomitantes do grupo II foi superior ao grupo I (5±4,21 x 1.42±3,08, p<0.001). A gastrectomia subtotal foi o procedimento mais realizado nos dois grupos (69,4% e 63,9% nos grupos I e II respectivamente) devido a maior prevalência de tumores distais em ambos os grupos, 54.4% grupo I e 52.9% grupo II. De acordo com a classificação de Laurén, no grupo I houve predomínio de tumores difusos (50,0%) e no grupo II do tipo intestinal (61,8%). Não houve diferença entre os dois grupos em relação a quantidade de linfonodos ressecados e de linfonodos positivos para metástases, assim como o tempo de permanência no CTI, dias de hospitalização e mortalidade. Conclusão: A gastrectomia por via laparoscópica é procedimento seguro, sem haver diferenças em morbidade, mortalidade e tempo de internação entre pacientes jovens e idosos.

Follow-up of Gastrectomized Patients due to Gastric Cancer in a Cancer Center of Bogota, Colombia / Seguimiento de pacientes gastrectomizados por cáncer gástrico en un centro oncológico de Bogotá, Colombia / Seguimento de pacientes gastrectomizados por câncer gástrico em um centro de oncológico em Bogotá, Colômbia

ABSTRACT Objective: To determine the perceived burden and functional status of gastric cancer patients with gastrectomy in a center of cancer in Bogota (Colombia) between 2013 and 2016. Materials and methods: Retrospective description of patients intervened by gastrectomy distributed in three groups: Patients with gastrectomy from 1 to 12 months of surgical intervention, 13 to 14 months and 25 to 36 months. For this, it was used the disease burden perception instrument and the Karnofsky scale. Results: 127 patients were included. 63 from 1 to 12 months, 43 from 13 to 24 months, and 21 from 25 to 36 months of intervention. Gastric adenocarcinoma of intestinal pattern stage III and II predominate. More than 50 % of the patients required total gastrectomy and received adjuvant chemotherapy. The majority of participants performed regular activities with mild signs and symptoms, presented low overall perceived burden and functional performance without statistically significant differences between groups. Patients from 1 to 12 months of intervention reported greater levels of physical discomfort. Conclusions: In patients with gastrectomy for gastric cancer, physical symptoms persist such as emotional disturbances, economic difficulties and limitations in the work role, findings to be included in follow-up programs.

RESUMEN Objetivo: evaluar el seguimiento de pacientes gastrectomizados por cáncer gástrico en un centro de oncología en Bogotá, entre 2013 y 2016, y determinar el estado funcional y la percepción de la carga de enfermedad. Material y métodos: descripción retrospectiva de pacientes intervenidos por gastrectomía, distribuidos en tres grupos: de 1 a 12 meses de seguimiento luego de la intervención, de 13 a 14 meses, y de 25 a 36 meses. Se utilizó un instrumento de percepción de carga de enfermedad crónica validado y la escala de Karnofsky. Resultados: se incluyeron 127 pacientes: 63 a un año, 43 a 2 años y 21 a 3 años. Predomina el adenocarcinoma gástrico de patrón intestinal. Más del 50 % requirió gastrectomía total, más quimioterapia adyuvante, y estaba en estadios II y III. La mayoría realiza actividad normal con signos y síntomas leves, con una carga de enfermedad percibida global baja y un estado funcional sin diferencias significativas entre los grupos. Los pacientes con seguimiento de 1 a 12 meses reportaron un mayor malestar físico. Conclusiones: en pacientes gastrectomizados por cáncer gástrico, persisten síntomas físicos, alteraciones emocionales, dificultades económicas y limitación en el rol laboral, hallazgos por ser incluidos en los programas de seguimiento.

RESUMO Objetivo: Avaliar o seguimento de pacientes gastrectomizados emum centro de referêncianacidade de Bogotá entre 2013 e 2016, determinando o status funcional e a percepção da carga da doença. Material e métodos: Descriçãoretrospropectiva dos pacientes intervencionados por gastrectomiadistribuídosemtrês grupos, que têm entre 1 a 12 meses de intervençãocirúrgica, 13 a 14 meses e 25 a 36 meses. Utilizamos o instrumento de percepção da carga de doençascrônicas, desenhado, avaliado e a escala de Karnofsky. Resultados: 127 pacientes foramacompanhados por gastrectomia por câncer gástrico; 63 emum ano, 43 em 2 anos e 21em 36 meses. Do ponto de vista histopatológico, predomina o adenocarcinoma gástrico intestinal. Mais de 50 % necessitaram de gastrectomia total, além de quimioterapia adjuvante e corresponderamaosestágios II e III. A maioria dos pacientes commonitorizaçãoactividade normal realizada sinais e sintomas leves comumabaixa carga global percebida e um estado funcional, semdiferenças significativas entre os grupos namonitorização de doentesacompanhados durante 1 a 12 meses relatados maisdesconforto físico. Conclusões: Nos pacientes gastrectomizados por câncer gástrico, a percepção de sobrecarga da doença é baixa. Alguns sintomas físicos persistem, disturbios emocionais e dificuldades econômicas, bem como limitação no papel do trabalho, achados a serem considerados no desenvolvimento de programas de acompanhamento.

Factibilidade da gastrectomia vertical aberta no Sistema Único de Saúde / Factibility of open vertical gastrectomy in Brazil´s Public Health System

RESUMO Objetivo: analisar as características clínicas e epidemiológicas, as complicações pós-operatórias e a perda de peso em pacientes submetidos à gastrectomia vertical por via convencional, em uma instituição de saúde do Sistema Único de Saúde (SUS). Métodos: estudo transversal, longitudinal, retrospectivo realizado a partir da coleta de dados de prontuários para análise de variáveis em pacientes submetidos à gastrectomia vertical aberta, no SUS, no período de julho de 2013 a janeiro de 2017. Resultados: foram analisados 296 pacientes operados no período do estudo, dos quais 54% eram do sexo masculino; a média de idade foi de 39,9 anos ±11,4; o índice de massa corporal (IMC) médio no pré-operatório foi de 43,5kg/m² e no pós-operatório, de 30,3kg/m²; a perda de excesso de peso foi de 73,6%; 83,24% apresentaram uma perda de excesso de peso maior do que 50%; o IMC pré-operatório foi maior no grupo com perda de peso menor do que 50%. Observou-se uma taxa de complicações precoces com necessidade de internamento de 5,4% e um índice de mortalidade de 1%. Conclusão: a gastrectomia vertical aberta é uma técnica segura e eficaz para a perda de peso e que pode ser mais realizada no SUS. Dentre as variáveis avaliadas, o IMC prévio foi a única relacionada com o sucesso pós-operatório.

ABSTRACT Objective: to analyse clinical and epidemiological characteristics, postoperative complications, and weight loss in patients undergoing conventional vertical gastrectomy in a hospital under Brazil's Public Health System (SUS). Methods: cross-sectional longitudinal retrospective study based on data collection from medical records for variable analysis in patients undergoing open vertical gastrectomy in SUS, from July 2013 to January 2017. Results: we analysed 296 patients operated on during the study period, of which 54% were male. The average age was of 39.9 years ±11.4; the average body mass index (BMI) was of 43.5kg/m² in the preoperative period and of 30.3kg/m² in the postoperative period; and the excess weight loss was of 73.6% (83.24% had an excess weight loss greater than 50%). Preoperative BMI was higher in the group with weight loss below 50%. We observed a 5.4% rate of early complications requiring hospitalization and a 1% mortality rate. Conclusion: open vertical gastrectomy is a safe and effective weight loss technique, which can be more performed in SUS. Among the variables evaluated in our work, the previous BMI was the only one related to the postoperative success.

Risk factors for severe postoperative complications after gastrectomy for gastric and esophagogastric junction cancers / Fatores de risco para complicações pós-operatórias graves após gastrectomia por câncer do estômago e junção esofagogástrica

ABSTRACT Background: Gastrectomy is the main treatment for gastric and Siewert type II-III esophagogastric junction (EGJ) cancer. This surgery is associated with significant morbidity. Total morbidity rates vary across different studies and few have evaluated postoperative morbidity according to complication severity. Aim: To identify the predictors of severe postoperative morbidity. Methods: This was a retrospective cohort study from a prospective database. We included patients treated with gastrectomy for gastric or EGJ cancers between January 2012 and December 2016 at a single center. Severe morbidity was defined as Clavien-Dindo score ≥3. A multivariate analysis was performed to identify predictors of severe morbidity. Results: Two hundred and eighty-nine gastrectomies were performed (67% males, median age: 65 years). Tumor location was EGJ in 14%, upper third of the stomach in 30%, middle third in 26%, and lower third in 28%. In 196 (67%), a total gastrectomy was performed with a D2 lymph node dissection in 85%. Two hundred and eleven patients (79%) underwent an open gastrectomy. T status was T1 in 23% and T3/T4 in 68%. Postoperative mortality was 2.4% and morbidity rate was 41%. Severe morbidity was 11% and was mainly represented by esophagojejunostomy leak (2.4%), duodenal stump leak (2.1%), and respiratory complications (2%). On multivariate analysis, EGJ location and T3/T4 tumors were associated with a higher rate of severe postoperative morbidity. Conclusion: Severe postoperative morbidity after gastrectomy was 11%. Esophagogastric junction tumor location and T3/T4 status are risk factors for severe postoperative morbidity.

RESUMO Raciona l: A gastrectomia é o tratamento principal para o câncer de junção esofagogástrica (EGJ) e Siewert tipo II-III. Ela está associada à morbidade significativa. As taxas de morbidade total variam entre os diferentes estudos e poucos avaliaram a morbidade pós-operatória de acordo com a gravidade da complicação. Objetivo: Identificar os preditores de morbidade pós-operatória grave. Métodos: Este foi um estudo de coorte retrospectivo de um banco de dados prospectivo. Foram incluídos pacientes tratados com gastrectomia para câncer gástrico ou EGJ em um único centro. A morbidade severa foi definida como escore de Clavien-Dindo ≥3. Análise multivariada foi realizada para identificar preditores de morbidade grave. Resultados: Duzentos e oitenta e nove gastrectomias foram realizadas (67% homens, mediana de idade: 65 anos). A localização do tumor foi EGJ em 14%, o terço superior do estômago em 30%, o terço médio em 26% e o terço inferior em 28%. Em 196 (67%), foi realizada gastrectomia total com dissecção de linfonodos D2 em 85%. Duzentos e onze pacientes (79%) foram submetidos à gastrectomia aberta. O estado T foi T1 em 23% e T3/T4 em 68%. A mortalidade pós-operatória foi de 2,4% e a taxa de morbidade foi de 41%. A morbidade severa foi de 11% e foi representada principalmente por fístula esofagojejunal (2,4%), fístula duodenal (2,1%) e complicações respiratórias (2%). Na análise multivariada, a localização do EGJ e os tumores T3/T4 foram associados com maior morbidade pós-operatória grave. Conclusão: Morbidade pós-operatória severa após gastrectomia foi de 11%. A localização do tumor na junção esofagogástrica e o estado T3/T4 são fatores de risco para a morbidade pós-operatória grave.

Conversion therapy for gastric cancer: expanding the treatment possibilities / Terapia de conversão no câncer gástrico: ampliando as possibilidades de tratamento

ABSTRACT Background: Conversion therapy in gastric cancer (GC) is defined as the use of chemotherapy/radiotherapy followed by surgical resection with curative intent of a tumor that was prior considered unresectable or oncologically incurable. Aim: To evaluate the results of conversion therapy in the treatment of GC. Methods: Retrospective analysis of all GC surgeries between 2009 and 2018. Patients who received any therapy before surgery were further identified to define the conversion group. Results: Out of 1003 surgeries performed for GC, 113 cases underwent neoadjuvant treatment and 16 (1.6%) were considered as conversion therapy. The main indication for treatment was: T4b lesions (n=10), lymph node metastasis (n=4), peritoneal carcinomatosis and hepatic metastasis in one case each. The diagnosis was made by imaging in 14 cases (75%) and during surgical procedure in four (25%). The most commonly used chemotherapy regimens were XP and mFLOX. Major surgical complications occurred in four cases (25%) and one (6.3%) died. After an average follow-up of 20 months, 11 patients (68.7%) had recurrence and nine (56.3%) died. Prolonged recurrence-free survival over 40 months occurred in two cases. Conclusion: Conversion therapy may offer the possibility of prolonged survival for a group of GC patients initially considered beyond therapeutic possibility.

RESUMO Racional : A terapia de conversão no câncer gástrico (CG) é definida como o uso de quimio/radioterapia seguida de ressecção cirúrgica com intenção curativa de um tumor que era considerado irressecável ou oncologicamente incurável. Objetivo : Avaliar os resultados da terapia de conversão no tratamento do CG. Métodos : Análise retrospectiva de todas as operações de CG entre 2009 e 2018. Os pacientes que receberam alguma terapia antes da operação foram também identificados para definir o grupo de conversão. Resultados : Entre 1003 operações realizadas para o CG, 113 foram submetidos ao tratamento neoadjuvante e 16 (1,6%) considerados como terapia de conversão. As principais indicações para o tratamento foram: lesões T4b (n=10), metástase linfonodal (n=4), carcinomatose peritoneal e metástase hepática em 1 caso cada. O diagnóstico foi feito por exame de imagem em 14 casos (75%) e durante o procedimento cirúrgico em 4 casos (25%). Os esquemas quimioterápicos mais utilizados foram XP e mFLOX. Complicações cirúrgicas maiores ocorreram em 4 casos (25%) e 1 (6,3%) foi a óbito. Após seguimento médio de 20 meses, 11 pacientes (68,7%) apresentaram recidiva e 9 (56,3%) morreram. Sobrevida livre de recidiva prolongada acima de 40 meses ocorreu em dois casos. Conclusão : A terapia de conversão pode oferecer possibilidade de sobrevida prolongada para um grupo de pacientes com CG considerados inicialmente fora das possibilidades terapêuticas.

Survival and perioperative morbidity of totally laparoscopic versus open gastrectomy for early gastric cancer: analysis from a single latin american centre / Comparação da sobrevida e morbidade perioperatória da gastrectomia totalmente laparoscópica vs. laparotômica para tratamento do câncer gástrico precoce em um centro latino-americano

ABSTRACT Background: Laparoscopic gastrectomy has numerous perioperative advantages, but the long-term survival of patients after this procedure has been less studied. Aim: To compare survival, oncologic and perioperative outcomes between completely laparoscopic vs. open gastrectomy for early gastric cancer. Methods: This study was retrospective, and our main outcomes were the overall and disease-specific 5-year survival, lymph node count and R0 resection rate. Our secondary outcome was postoperative morbidity. Results: Were included 116 patients (59% men, age 68 years, comorbidities 73%, BMI 25) who underwent 50 laparoscopic gastrectomies and 66 open gastrectomies. The demographic characteristics, tumour location, type of surgery, extent of lymph node dissection and stage did not significantly differ between groups. The overall complication rate was similar in both groups (40% vs. 28%, p=ns), and complications graded at least Clavien 2 (36% vs. 18%, p=0.03), respiratory (9% vs. 0%, p=0.03) and wound-abdominal wall complications (12% vs. 0%, p=0.009) were significantly lower after laparoscopic gastrectomy. The lymph node count (21 vs. 23 nodes; p=ns) and R0 resection rate (100% vs. 96%; p=ns) did not significantly differ between groups. The 5-year overall survival (84% vs. 87%, p=0.31) and disease-specific survival (93% vs. 98%, p=0.20) did not significantly differ between the laparoscopic and open gastrectomy groups. Conclusion: The results of this study support similar oncologic outcome and long-term survival for patients with early gastric cancer after laparoscopic gastrectomy and open gastrectomy. In addition, the laparoscopic approach is associated with less severe morbidity and a lower occurrence of respiratory and wound-abdominal wall complications.

RESUMO Racional: A gastrectomia laparoscópica tem numerosas vantagens perioperatórias, mas a sobrevivência em longo prazo após este procedimento tem sido menos estudada. Objetivo: Comparar resultados de sobrevivência, oncológica e perioperatória entre a gastrectomia completamente laparoscópica vs. aberta para câncer gástrico precoce. Método: Este estudo foi retrospectivo e os principais resultados foram a sobrevivência global e específica de cinco anos, contagem de linfonodos e taxa de ressecção R0. Resultado secundário foi a morbidade pós-operatória. Resultados: Foram incluídos 116 pacientes (59% homens, idade 68 anos, comorbidades 73%, IMC 25) que foram submetidos a 50 gastrectomias laparoscópicas e 66 gastrectomias abertas. As características demográficas, a localização do tumor, o tipo de operação, a extensão da dissecção dos linfonodos e do estágio não diferiram significativamente entre os grupos. A taxa geral de complicações foi semelhante em ambos os grupos (40% vs. 28%, p=ns) e complicações classificadas Clavien 2 (36% vs. 18%, p=0,03), respiratórias (9% vs. 0%, p=0,03) e as da parede abdominal (12% vs. 0%, p=0,009) foram significativamente menores após a gastrectomia laparoscópica. A contagem de linfonodos (21 contra 23, p=ns) e a taxa de ressecção R0 (100% vs. 96%; p=ns) não diferiram significativamente entre os grupos. A sobrevida global de cinco anos (84% vs. 87%, p=0,31) e a sobrevida específica (93% vs. 98%, p=0,20) não diferiram significativamente entre os grupos de gastrectomia laparoscópica e aberta. Conclusão: Estes resultados suportam resultados oncológicos similares e sobrevida em longo prazo para pacientes com câncer gástrico precoce após gastrectomia laparoscópica e gastrectomia aberta. Além disso, a abordagem laparoscópica está associada com morbidade menos grave e menor ocorrência de complicações respiratórias e da parede abdominal.

Endoscopic full-thickness resection for gastric gastrointestinal stromal tumor originating from the muscularis propria

SUMMARY OBJECTIVE: This study retrospectively reviewed 46 cases of gastric gastrointestinal stromal tumors treated by endoluminal endoscopic full-thickness resection (EFR) microsurgery in our gastrointestinal endoscopy center. We aimed to evaluate the EFR for the treatment of gastric gastrointestinal stromal tumors originating from the muscularis propria. METHODS: A total of 46 patients with gastric gastrointestinal stromal tumors originated from the muscularis propria layer from January 2012 to June 2015 were treated with EFR. The patients were followed up with gastroscope and computed tomography (CT) for evaluation of therapeutic effect and safety. RESULTS: EFR was successfully accomplished to remove all tumors in 46 patients. The mean procedure time was 82.5±39.8min (56-188min). Except in 3 leiomyomas, pathological examination confirmed gastrointestinal stromal tumor (GIST) in 43 cases. None of the patients had occurred bleeding, peritonitis and other complications after EFR. Thereafter, all patients were followed up with gastro-scope after 1, 6,12 months. CONCLUSIONS: EFR is effective and safe for patients with gastric gastrointestinal stromal tumors originated from muscularis propria layer and has the advantage of less invasive treatment and higher tumor resection rate. It should be considered for further application.

RESUMO OBJETIVO: Este estudo revisou retrospectivamente 46 casos de tumores gástricos estromáticos gastrointestinais tratados por microcirurgia endoluminal endoscópica de ressecção completa (EFR) em nosso centro de endoscopia gastrointestinal. Pretendemos avaliar a EFR para o tratamento de tumores gastrointestinais estromáticos originários da muscularis própria. MÉTODOS: Um total de 46 pacientes com tumores gástricos estromáticos gastrointestinais originários da camada muscular própria, de janeiro de 2012 a junho de 2015, foi tratado com EFR. Os pacientes foram acompanhados com gastroscópio e tomografia computadorizada (TC) para avaliação de efeitos terapêuticos e segurança. RESULTADOS: A EFR foi realizada com sucesso para remover todos os tumores em 46 pacientes. O tempo médio de procedimento foi de 82,5±39,8 min (56-188 min). Exceto em três leiomiomas, exame patológico confirmou tumor estromal gastrointestinal (Gist) em 43 casos. Em nenhum paciente ocorreu sangramento, peritonite e outras complicações após EFR. Posteriormente, todos os pacientes foram acompanhados com gastroscópio após um, seis e 12 meses. CONCLUSÕES: A EFR é eficaz e segura para pacientes com tumores gastrointestinais originários da camada muscular própria e tem a vantagem de ser um tratamento menos invasivo e com maior taxa de ressecção tumoral. Deve ser considerada para posterior aplicação.

Surgical treatment of gastric cancer: a 10-year experience in a high-volume university hospital

OBJECTIVES: Surgery remains the cornerstone treatment modality for gastric cancer, the fifth most common type of tumor in Brazil. The aim of this study was to analyze the surgical treatment outcomes of patients with gastric cancer who were referred to a high-volume university hospital. METHODS: We reviewed all consecutive patients who underwent any surgical procedure due to gastric cancer from a prospectively collected database. Clinicopathological characteristics, surgical and survival outcomes were evaluated, with emphasis on patients treated with curative intent. RESULTS: From 2008 to 2017, 934 patients with gastric tumors underwent surgical procedures in our center. Gastric adenocarcinoma accounted for the majority of cases. Of the 875 patients with gastric adenocarcinoma, resection with curative intent was performed in 63.5%, and palliative treatment was performed in 22.4%. The postoperative surgical mortality rate for resected cases was 5.3% and was related to D1 lymphadenectomy and the presence of comorbidities. Analysis of patients treated with curative intent showed that resection extent, pT category, pN category and final pTNM stage were related to disease-free survival (DFS) and overall survival (OS). The DFS rates for D1 and D2 lymphadenectomy were similar, but D2 lymphadenectomy significantly improved the OS rate. Additionally, clinical factors and the presence of comorbidities had influence on the OS. CONCLUSIONS: TNM stage and the type of lymphadenectomy were independent factors related to prognosis. Early diagnosis should be sought to offer the optimal surgical approach in patients with less-advanced disease.

Resultados de la manometría del cuerpo esofágico y del asa de yeyuno en pacientes operados por cáncer gástrico con gastrectomía total 5 años después de la cirugía / Esophageal manometry in patients with total gastrectomy 5 years after surgery

Resumen Introducción: La técnica de elección para la reconstrucción del tránsito intestinal después de una gastrectomía total es la esófago-yeyuno anastomosis en Y de Roux, la cual evita el reflujo de jugo digestivo alcalino. El objetivo del presente estudio es el de analizar la motilidad del esófago y del asa de yeyuno en pacientes operados con gastrectomía total por cáncer gástrico. Pacientes y método: Se estudió prospectivamente una muestra de 17 pacientes intervenidos mediante gastrectomía total 5 años atrás. En todos ellos se realizaron manometrías esofágicas de alta resolución incluyendo los primeros 7 cm del asa de yeyuno. Resultados: Los resultados de la manometría demostraron motilidad esofágica normal a excepción de la presión máxima intrabolo, la cual se encontraba aumentada en todos los pacientes. La motilidad del asa de yeyuno fue desordenada e inefectiva. Conclusiones: La motilidad del cuerpo esofágico es normal 5 años después de la gastrectomía total. Sin embargo, la presión intrabolo máxima se encuentra aumentada; la causa más probable de este hecho estaría constituida por el asa de yeyuno, que ejerce resistencia al paso del bolo debido a que presenta una actividad motora desordenada y poco propulsiva. El impacto clínico de este hecho es, sin embargo, poco importante.

Abstract Introduction: The most preferred technique to reconstruct the intestinal transit after total gastrectomy for gastric cancer is the Roux-en-Y esophagus-gastrostomy which prevents the reflux of alkaline intestinal juice. The purpose of this study was to analyze the esophageal motility and the motility of the jejunal loop in patients subjected to total gastrectomy. Patients and method: A prospective sample of 17 total gastrectomy patients operated on 5 years before was studied using high resolution esophageal manometry including the first 7 cm of the jejunal loop. Results: Manometry results showed normal esophageal body motility with the exception of the maximum intrabolus pressure that was elevated in all patients. The jejunal loop motility was disordered and ineffective. Conclusions: Esophageal body motility was normal 5 years after the surgical procedure. However, maximum intrabolus pressure was elevated and the most plausible reason would be the jejunal loop that exerts resistance to the bolus passage due to its ineffective motility. However, this fact does not have a significant clinical impact.

Gastrectomía atípica laparoscópica en el tratamiento de GIST gástrico: Resultados a corto y mediano plazo / Laparoscopic atypical gastrectomy in the treatment of gastric GIST. Short-term and medium-term outcomes

Los tumores gastrointestinales del estroma son las neoplasias mesenquimatosas más frecuentes del tracto gastrointestinal. Numerosas investigaciones se han dirigido al tratamiento laparoscópico de los mismos. El propósito de este estudio es evaluar la seguridad y la eficacia de las gastrectomías atípicas en un hospital de alta complejidad de nuestro medio. En el período comprendido entre enero 2009 y diciembre 2015, 24 pacientes con sospecha de GIST gástrico fueron intervenidos quirúrgicamente vía laparoscópica, considerándose criterio de inclusión la ausencia de metástasis hepáticas y peritoneales a distancia, el tamaño tumoral < 5 cm de diámetro y la positividad del antígeno CD117 en los estudios inmunohistoquímicos. Se analizaron retrospectivamente las características clínico-patológicas, los resultados quirúrgicos, las complicaciones postoperatorias y los resultados oncológicos. Fueron incluidos en el estudio estadístico 14 pacientes. La edad promedio fue 60 años (10 mujeres y 4 hombres) y la hemorragia digestiva alta fue la sintomatología de diagnóstico más frecuente. El tiempo promedio de cirugía fue 113 minutos, con necesidad de conversión en un caso. No se registraron complicaciones mayores, reintervenciones ni reinternaciones. El tamaño tumoral promedio fue 41 mm, con márgenes quirúrgicos libres de enfermedad. El promedio de internación fue 3 días y el de seguimiento 44 meses, sin registro de recidivas tumorales. El abordaje laparoscópico a través de gastrectomías atípicas del GIST gástrico resultó una técnica segura y eficaz con buenos resultados a corto y mediano plazo en manos de cirujanos con experiencia.

Gastrointestinal stromal tumors are the most common mesenchymal neoplasms of the gastrointestinal tract. Recently, many studies have addressed the laparoscopic management of these tumors. The aim of this study was to evaluate the safety and efficacy of laparoscopic atypical gastrectomy in the resolution of these neoplasms. In the period between January 2009 and December 2015, 24 patients with suspected gastric GIST less than 5 cm in size underwent surgery under this approach. Abscense of peritoneal and liver metastases and immunohistochemistry expression of CD117 antigen were considered as inclusion criteria. We retrospectively analyzed clinical and histopathological characteristics, surgical outcomes, postoperative complications and oncological results. Statistical analysis included 14 patients. The mean age was 60 years (10 women and 4 men) and upper gastrointestinal bleeding was the chief complaint for consultation. Conversion to open surgery was necessary in one case and no major complications, readmissions or reoperations were recorded. The mean tumor size was 41 mm with negative resection margin in all samples. The mean hospital stay was 3 days and no tumor recurrences were recorded in 44 months of follow-up. Laparoscopic atypical gastrectomy for gastric GIST is a safe and effective technique with good outcomes in experienced hands.

Endoscopic sleeve gastroplasty for obesity treatment: two years of experience / Gastroplastia sleeve endoscópica para tratamento da obesidade: dois anos de experiência

ABSTRACT Background: Bariatric endoscopic techniques are minimally invasive and induce gastric volume reduction to treat obesity. Aim: To evaluate endoscopic sleeve gastroplasty (Apollo method) using a suturing method directed at the greater curvature, as well as the perioperative care, two year safety and weight loss. Method: Prospective single-center study over 154 patients (108 females) using the endoscopic sleeve gastroplasty procedure under general anesthesia with overnight inpatient observation. Of the154 initial patients, 143 were available for 1-month of follow-up, 133 for 6-month, 64 for 12-month and 28 completed the 24 month assessment. Follow-up was carried out by a multidisciplinary team (nutritionist and psychologist). Outcomes evaluated were: change in BMI; change in body weight (TBWL); % of loss of initial body weight (%TBWL); % of excess body weight loss (%EWL) (segregated in > or <25% and adverse effects. Voluntary oral contrasted radiological examinations were scheduled to assess the gastroplasty at different times post-procedure. Results: Mean age was 44.9 (23-69) years. At 24 months after the procedure baseline mean BMI change from 38.3 to 30.8 kg/m2. TBWL, %TBWL and %EWL were of 21.3 kg, 19.5% and 60.4% respectively. 85.7% of patients achieve the goal of >25% %EWL. There were no mayor adverse events intraprocedure or during the 24 months of follow-up . Conclusion: Endoscopic sleeve gastroplasty with regular monitoring by a multidisciplinary team can be considered an effective, safe and well tolerated procedure for obesity treatment, at least for two years of follow-up.

RESUMO Racional: As técnicas de endoscopia bariátrica são minimamente invasivas e induzem à redução do volume gástrico para tratar a obesidade. Objetivo: Avaliar a gastroplastia sleeve endoscópica (método Apollo) usando um método de sutura direcionado para a grande curvatura, bem como os cuidados perioperatórios, segurança em dois anos e perda de peso. Método: Estudo prospectivo em um único centro com 154 pacientes (108 mulheres) usando o procedimento endoscópico de gastroplastia sleeve sob anestesia geral com observação do paciente internado durante a noite. Dos 154 pacientes iniciais, 143 estiveram disponíveis para acompanhamento de um mês, 133 durante seis meses, 64 durante 12 meses e 28 completaram a avaliação de 24 meses. O acompanhamento foi realizado por equipe multidisciplinar (nutricionista e psicólogo). Foram avaliados nos resultados as mudanças no IMC, no peso corporal (TWBL), no % de perda do peso corporal inicial (% TBWL) no % de excesso de perda de peso corporal (%EWL) segregado em > ou < 25% e efeitos adversos. Estudos radiológicos contratados orais voluntários foram programados para avaliar a gastroplastia em diferentes tempos após o procedimento. Resultados: A idade média foi de 44,9 anos (23-69). Aos 24 meses após o procedimento a linha de base média do IMC mudou de 38,3 para 30,8 kg/m2. O TBWL, %TBWL e %EWL foram de 21,3 kg, 19,5% e 60,4%, respectivamente, e 85,7% dos pacientes alcançaram o objetivo de >25% EWL. Não houve eventos adversos graves peroperatórios ou durante os 24 meses de acompanhamento. Conclusão: A gastroplastia sleeve endoscópica com monitoramento regular por equipe multidisciplinar pode ser considerado procedimento eficaz, seguro e bem tolerado para o tratamento de pacientes com obesidade, pelo menos nos dois anos de acompanhamento.

Efficacy of a quadruple therapy regimen for Helicobacter pylori eradication after partial gastrectomy

We aimed to evaluate the effectiveness and safety of bismuth-containing quadruple therapy plus postural change after dosing for Helicobacter pylori eradication in gastrectomized patients. We compared 76 gastric stump patients with H. pylori infection (GS group) with 50 non-gastrectomized H. pylori-positive patients who met the treatment indication (controls). The GS group was divided into GS group 1 and GS group 2. All groups were administered bismuth potassium citrate (220 mg), esomeprazole (20 mg), amoxicillin (1.0 g), and furazolidone (100 mg) twice daily for 14 days. GS group 1 maintained a left lateral horizontal position for 30 min after dosing. H. pylori was detected using rapid urease testing and histologic examination of gastric mucosa before and 3 months after therapy. Mucosal histologic manifestations were evaluated using visual analog scales of the updated Sydney System. GS group 1 had a higher prevalence of eradication than the GS group 2 (intention-to-treat [ITT]: P=0.025; per-protocol [PP]: P=0.030), and the control group had a similar prevalence. GS group 2 had a lower prevalence of eradication than controls (ITT: P=0.006; PP: P=0.626). Scores for chronic inflammation and activity declined significantly (P<0.001) 3 months after treatment, whereas those for atrophy and intestinal metaplasia showed no significant change. Prevalence of adverse reactions was similar among groups during therapy (P=0.939). A bismuth-containing quadruple therapy regimen plus postural change after dosing appears to be a relatively safe, effective, economical, and practical method for H. pylori eradication in gastrectomized patients.

Experiencia de gastrectomía vertical en manga en el Hospital Carlos Andrade Marín / Vertical sleeve gastrectomy experience in the Carlos Andrade Marin Hospital

Introducción: la obesidad se ha convertido en un problema a nivel mundial. Ecuador no podía ser la excepción y según el INEC, 4 millones de personas en el país padecen de sobrepeso. La cirugía bariátrica ha sido reconocida como un método seguro y eficaz en el tratamiento de la obesidad y sus comorbilidades. Materiales y métodos: con el objetivo de analizar los resultados y complicaciones de la manga gástrica (LSG, por sus siglas en inglés) en el Hospital Carlos Andrade Marín, se realiza un estudio descriptivo retrospectivo, de los pacientes operados entre 2008 y 2013 en el Servicio de Cirugía General del Hospital Carlos Andrade Marín, se realiza un estudio descriptivo retrospectivo, de los pacientes operados entre 2008 y 2013 en el Servicio de Cirugía General del Hospital Carlos Andrade Marín (HCAM). Del total, 309 sujetos, se evaluaron características demográfcas y complicaciones perioperatorias. De un grupo más pequeño, 162 pacientes que tuvieron un seguimiento posoperatorio de al menos un año, se analizó la reducción de peso y resolución de comorbilidades asociadas a la obesidad. Resultados: el 87% de los pacientes tienen un índice de masa corporal (IMC) entre 30 y 40. El promedio de reducción de peso al año de la cirugía fue de 9.5 puntos de IMC. La morbilidad general relacionada al procedimiento fue de 7.2%, con una tasa de fístulas de 4.5%. Se reoperaron 14 pacientes, ya sea por fístula o por sangrado. En cuanto a la morbilidad que se relaciona a la obesidad, más del 60% de pacientes presentaron mejoría. Conclusión: el resultado de este estudio demuestra que la manga gástrica es un excelente procedimiento aplicado al tipo de obesidad que maneja este servicio, la gran mayoría tipo I y II. Se ha logrado llevar a estos pacientes a valores casi normales de IMC al año del procedimiento, con una aceptable morbilidad y con un adecuado manejo de las complicaciones.

Introduction: obesity has become a worldwide problem. Ecuador is not the exception an according to the INEC, 4 million people in the country have overweight. The bariatric surgery has been recognized as a safe and effective treatment for obesity and its comorbidities. Materials and methods: in order to analyze the results and complications of the laparoscopic sleeve gastrectomy (LSG) at the Carlos Andrade Marín Hospital, a descriptive study of patients operated between 2008 and 2013 in the Department of Surgery at the Carlos Andrade Marin Hospital was performed. Of the 309 subjects, demographics and perioperative complications were evaluated. In a smaller group, 162 patients who had a postoperative follow-up of at least one year, weight loss and resolution of comorbidities associated with obesity was analyzed. Results: eighty seven percent (87%) of patients have a body mass index (BMI) between 30 and 40. The average weight loss at one year after surgery was 9.5 BMI points. The overall procedure -related morbidity was 7.2 %, with a 4.5% rate of gastric sleeve fstula. Fourteen patients were operated again due to gastric sleeve bleeding. There were no deaths related to surgery. Regarding morbidity associated with obesity, more than 60% of patients showed improvement. Conclusion: the result of this study shows that gastric sleeve is an excellent procedure applied to the type of obesity of this service, most type I and II. It has managed to bring these patients to near normal values of BMI within a year of the procedure, with acceptable morbidity and proper management of complications.

Gastrectomía totalmente laparoscópica por neoplasias gástricas: Experiencia en un centro público / Totally laparoscopic gastrectomy for the treatment of gastric tumors

Background: The laparoscopic approach for the treatment of gastric tumors has many advantages. Aim: To evaluate the results of a laparoscopic gastrectomy program developed in a public hospital. Patients and Methods: Retrospective review of epidemiological, perioperative and follow-up data of patients who were treated with a laparoscopic gastrectomy due to gastric tumors between 2006 and 2013. A totally laparoscopic technique was used for all cases. Complications were evaluated according to the Clavien-Dindo classification. Results: Fifty one patients, aged 65 (36-85) years, underwent a laparoscopic gastrectomy. In 22 patients a total gastrectomy was performed. Conversion rate to open surgery was 8%. Operative time was 330 (90-500) min and bleeding was 200 (20-500) ml. Median hospital stay was 7 (3-37) days. Postoperative morbidity was present in 17 (33%) patients, 3 (6%) patients had complications grade 3 or higher and one patient died (1.9%). Tumor pathology was adenocarcinoma in 39 patients. A complete resection was achieved in 97%. Twenty nine patients (74%) with gastric adenocarcinoma had early gastric cancer and 84% of patients were in stage one. Median lymph node count was 24. Median follow-up was 26 (1-91) months. There was no cancer related mortality among patients subjected to a curative resection. Overall survival for patients with adenocarcinoma was 92% at 3 years. Conclusions: This study supports the feasibility and safety of a laparoscopic gastrectomy program in a public hospital; with low morbidity, adequate lymph node dissection and long-term survival. This approach must be considered an option for selected patients with gastric cancer.

Cirugía Bariátrica / Bariatric surgery

La cirugía de la obesidad ha tenido un impresionante desarrollo en los últimos 20 años, debido a la necesidad de tratamiento efectivo y duradero para esta enfermedad crónica epidémica. La introducción de la técnica laparoscópica a las cirugías bariátricas contribuyó en forma importante a disminuir sus complicaciones y mortalidad. Las operaciones más frecuentes en el mundo son el bypass gástrico, la gastrectomía vertical, la banda gástrica ajustable y la derivación biliopancreática, aunque en la actualidad en nuestro país se utilizan solo las dos primeras. Se describen estas cirugías bariátricas, su técnica, complicaciones y resultados. El tratamiento quirúrgico de la obesidad logra bajas de peso y control de las comorbilidades muy superiores a las logradas por el tratamiento médico y terapia farmacológica. Por ello, el tratamiento quirúrgico es la terapia estándar para pacientes con obesidad.

Obesity surgery has had an impressive development in the last 20 years, due to the need for effective and lasting treatment for this epidemic cronic disease. The introduction of laparoscopic technique in bariatric surgical interventions contributed significantly on reducing surgical complications and mortality. The most common operations in the world are gastric bypass, sleeve gastrectomy, gastric banding and biliopancreatic diversion, though only the first two mentioned are used in our country today. These bariatric surgery, their technique, complications and results are described. Surgical treatment of obesity achieves weight loss and comorbidities control far superior to those achieved by medical treatment and pharmacologic therapy. Therefore, surgical treatment is the standard therapy for obese patients.