Usefulness of inflammatory markers in detecting esophagojejunostomy leakage.

INTRODUCTION AND AIM: Total gastrectomy is utilized in different pathologies. Esophagojejunostomy leakage is a frequent complication. Our aim was to determine the association of the neutrophil-lymphocyte ratio (NLR) with esophagojejunostomy leakage that subsequently required invasive treatment. MATERIALS AND METHODS: A retrospective study included patients that underwent esophagojejunostomy within the time frame of 2002-2017. Patients were grouped into those with or without anastomotic leakage that had conservative treatment (group A) and those with anastomotic leakage that had invasive treatment (group B). ROC curves and the Youden index were used for the optimum cutoff values of the NLR. RESULTS: Fifty-seven patients were included. Thirty-two (56.14%) were men, and mean patient age was 61.8 ± 13.4 years. Forty-five patients were assigned to group A and 12 to group B. Mean NLR was higher for group B on postoperative day 3 (group A 9.5 ± 7.5 vs. group B 13.9 ± 4.9) (p = 0.05). Mean total leukocytes was higher in group B on postoperative day 5 (group A 7.8 ± 3.4 × 103/mcl vs. group B 10.3 ± 4.4 × 103/mcl) (p = 0.03). NLR and total leukocyte accuracy on postoperative day 3 was calculated with ROC curves, at 0.78 and 0.63, respectively. For the NLR and leukocyte count, sensitivity was 91.7% and 58%, specificity was 64.4% and 60%, positive predictive value was 40% and 28%, and negative predictive value was 96% and 84%, respectively. CONCLUSIONS: Postoperatively, the NLR identified the total gastrectomy with esophagojejunostomy patients that subsequently required an invasive procedure secondary to esophagojejunostomy leakage.

Surgical Apgar score as a complication predictor in gastrointestinal oncologic surgery.

INTRODUCTION AND AIMS: Surgical resection of gastrointestinal (GI) cancer is the cornerstone of curative treatment but entails considerable morbidity. The surgical Apgar score (SAS) is a practical and objective instrument that provides immediate feedback. The aim of the present study was to evaluate the performance of the SAS for predicting complications at 30 days in patients with primary GI cancer that underwent curative surgery. MATERIALS AND METHODS: A prospective observational study was conducted that included 50 patients classified into a low SAS (≤ 4) group or a high SAS (≥ 5) group. Complications were defined as any event classified as a Clavien-Dindo grade II to V event. Bivariate and multivariate analyses were performed through the Cox regression and a p<0.05 was considered significant. RESULTS: Overall postoperative morbidity was 50.0%, with no mortality. Eighty-six percent of cases were catalogued as having an ASA≥3. Eighty-eight percent had a high SAS, of whom 45.5% presented with a complication, whereas 12.0% had a low SAS and a complication rate of 83.3%. In the multivariate analysis, the BMI (OR: 3.351, 95% CI: 1.218-9.217, P=.019), SAS (OR: 0.266, 95% CI: 0.077-0.922, P=.037), surgery duration (OR: 3.170, 95% CI: 1.092-9.198, P=.034), and ephedrine use (OR: 0.356, 95% CI: 0.144-0.880, P=.025) were significantly associated with the development of adverse outcomes. CONCLUSIONS: SAS was shown to be an independent predictive factor of postoperative morbidity at 30 days in the surgical management of GI cancer and appears to offer a reliable sub-stratification in a high-risk population with an ASA≥3.

Contrast-enhanced swallow study sensitivity for detecting esophagojejunostomy leakage. / Sensibilidad del trago de contraste hidrosoluble para la detección de fugas de anastomosis esofagoyeyunal.

INTRODUCTION AND AIM: Sixty percent of the patients with gastric carcinomas are candidates for surgical resection through total gastrectomy and esophagojejunostomy, the latter of which is associated with leaks in up to 12.3% of cases. There is no standardized procedure for diagnosing anastomotic leaks. The aim of the present study was to establish the diagnostic sensitivity of the contrast-enhanced swallow study for detecting esophagojejunostomy leakage after total gastrectomy. MATERIALS AND METHODS: A retrospective analysis was conducted on patients that underwent total gastrectomy due to gastric adenocarcinoma, within the time frame of 2002 and 2017. Demographic, clinical, and laboratory factors were identified, emphasizing the clinical and radiologic detection of anastomotic leaks. Descriptive statistics were carried out and the sensitivity of the contrast-enhanced swallow study for diagnosing leakage was calculated. RESULTS: Fifty-eight patients were included in the study. Their mean age was 61.5 years. A total of 55.2% of the patients were men and 44.8% were women. Gastric adenocarcinoma was the indication for gastrectomy in 100% of the cases. Anastomotic leak presented in 31.01% of the patients. Diagnostic sensitivity of the contrast-enhanced swallow study for detecting leaks was 66%. CONCLUSIONS: According to our analysis, the contrast-enhanced swallow study had limited diagnostic efficiency for detecting anastomotic leaks, with a sensitivity of 66%. We suggest maintaining high diagnostic suspicion in patients with studies that are initially negative and basing decisions on a more extensive approach.

The Mexican consensus on the detection and treatment of early gastric cancer. / Consenso mexicano sobre detección y tratamiento del cáncer gástrico incipiente.

Gastric cancer is one of the most frequent neoplasias in the digestive tract and is the result of premalignant lesion progression in the majority of cases. Opportune detection of those lesions is relevant, given that timely treatment offers the possibility of cure. There is no consensus in Mexico on the early detection of gastric cancer, and therefore, the Asociación Mexicana de Gastroenterología brought together a group of experts and produced the "Mexican consensus on the detection and treatment of early gastric cancer" to establish useful recommendations for the medical community. The Delphi methodology was employed, and 38 recommendations related to early gastric cancer were formulated. The consensus defines early gastric cancer as that which at diagnosis is limited to the mucosa and submucosa, irrespective of lymph node metástasis. In Mexico, as in other parts of the world, factors associated with early gastric cancer include Helicobacter pylori infection, a family history of the disease, smoking, and diet. Chromoendoscopy, magnification endoscopy, and equipment-based image-enhanced endoscopy are recommended for making the diagnosis, and accurate histopathologic diagnosis is invaluable for making therapeutic decisions. The endoscopic treatment of early gastric cancer, whether dissection or resection of the mucosa, should be preferred to surgical management, when similar oncologic cure results can be obtained. Endoscopic surveillance should be individualized.

Clinical usefulness of extending the proximal margin in total gastrectomies for gastric adenocarcinoma. / Utilidad clínica de la ampliación del margen proximal en gastrectomías totales por adenocarcinoma gástrico.

INTRODUCTION AND AIMS: Surgical resection with negative margins is part of the curative treatment of gastric adenocarcinoma. Positive surgical margins are associated with worse outcome. The aim of the present study was to determine the clinical usefulness of extending the proximal surgical margin in patients undergoing total gastrectomy for gastric adenocarcinoma. MATERIALS AND METHODS: A retrospective analysis of patients that underwent total gastrectomy within the time frame of 2002 and 2017 was conducted. Patients diagnosed with adenocarcinoma that underwent curative surgery were included. Patients were divided into three groups, depending on proximal surgical margin status: negative margin (R0), positive margin with additional resection to achieve negative margin (R1-R0), and positive margin (R1). Demographic and clinical variables were analyzed. The outcome measures to evaluate were recurrence, disease-free survival, and overall survival. RESULTS: Forty-eight patients were included in the study. Thirty-seven were classified as R0, 9 as R1-R0, and 2 as R1. Fifty-two percent of the patients had clinical stage III disease. The overall surgical mortality rate was 2% and the morbidity rate was higher than 29%. The local recurrence rate was 0% in the R1-R0 group vs. 50% in the R1 group (p = 0.02). Disease-free survival was 49 months in the R1-R0 group vs. 32 months in the R1 group (p = 0.6). Overall survival was 51 months for the R1-R0 group vs. 35 months for the R1 group (p = 0.5). CONCLUSIONS: Intraoperative extension of the positive surgical margin improved the local recurrence rate but was not associated with improvement in overall survival or disease-free survival and could possibly increase postoperative morbidity.

Contrast-enhanced swallow study sensitivity for anastomotic leak detection in post-esophagectomy patients. / Sensibilidad del estudio contrastado para la detección de fuga de la anastomosis en pacientes post-esofagectomía.

INTRODUCTION AND AIMS: Esophagectomy is a highly invasive surgery and one of its postoperative complications is anastomotic leakage, occurring in 53% of cases. The aim of the present study was to determine the sensitivity of the contrast-enhanced swallow study as a method for diagnosing anastomotic leak in patients that underwent esophagectomy. MATERIAL AND METHODS: The present retrospective study included the case records of patients that underwent esophagectomy with reconstruction and cervical anastomosis at the Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán within the time frame of January 1, 2000 and May 31, 2016. Demographic, clinical, and laboratory data emphasizing clinical and radiographic anastomotic leak detection were identified. Descriptive statistics were carried out and contrast-enhanced swallow study sensitivity for diagnosing leakage was calculated. RESULTS: Seventy patients were included in the analysis. The mean age of the patients was 50.6 years, 51 of the patients were men (72.86%), and 19 were women (27.14%). Indications for surgery were benign lesion in 29 patients (41.4%) and malignant lesion in 41 (58.6%). A total of 44.3% of the patients presented with a comorbidity, with diabetes mellitus and high blood pressure standing out. Thirty patients (42.85%) presented with anastomotic leak. Contrast-enhanced swallow study sensitivity for leak detection was 43.33%. CONCLUSIONS: The diagnostic sensitivity of the contrast-enhanced swallow study was very low. Therefore, we recommend the discontinuation of its routine use as a method for diagnosing anastomotic leaks.

Angiomixoma agresivo: reporte de un caso y experiencia global con 168 casos / Aggressive angiomyxoma: Case report and global experience of 168 cases

Resumen ANTECEDENTES: el angiomixoma vulvar agresivo es una neoplasia poco frecuente, de origen mesenquimatoso, que suele afectar la región pélvica y perineal, con alto grado de infiltración y recurrencia local. El tratamiento de elección es la extirpación quirúrgica. CASO CLÍNICO: mujer de 39 años de edad, que inició con una tumoración vulvar derecha de 6 cm, de consistencia blanda, móvil, no dolorosa, sin ulceraciones, clasificada como quiste de la glándula de Bartholin; se efectuó resección quirúrgica de la lesión sin inconvenientes ni complicaciones. En el servicio de Cirugía Oncológica del Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, se solicitó una tomografía axial computada que evidenció una tumoración heterogénea, hipodensa, vascularizada, con componente quístico que desplazaba el conducto vaginal, útero y vejiga, con infiltración de tejidos blandos y piel, de 15 x 10 x 28 cm en el labio mayor derecho. Con la biopsia incisional se estableció el diagnóstico de angiomixoma agresivo profundo. En diciembre de 2016 se extirpó el tumor vulvoperineal. El reporte patológico fue de tumoración de 30 x 25 x 7 cm, con receptores positivos para estrógenos y progesterona, e intensidad +++ en más de 80%. La paciente recibió tratamiento coadyuvante con tamoxifeno; actualmente se encuentra asintomática y en vigilancia. CONCLUSIONES: la prescripción de agentes antiestrogénicos disminuye el tamaño tumoral. Este tratamiento supone abordajes quirúrgicos menos agresivos. Por la recurrencia del angiomixoma agresivo se sugiere la vigilancia a largo plazo e implementar un esquema de mantenimiento con fármacos antiestrogénicos.

Abstract BACKGROUND: Aggressive angiomyxoma of the vulva is a very rare mesenchymal neoplasm, which has a preference for the pelvic and perineal regions. It is defined to be aggressive because of its tendency to infiltrate and local recurrence. The treatment of choice is surgical excision. CLINICAL CASE: A 39-year-old female, who started with a 6 cm right vulvar tumor, soft, mobile, non-painful, without ulcerations, classified as a cyst of the Bartholin's gland; surgical resection of the lesion was performed without incidents or complications. In the Oncology Surgery service (Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán), a computerized axial tomography was requested, wich evidenced a heterogeneous, hypodense, vascularized tumor with cystic component that displaced the vaginal canal, uterus and bladder, with infiltration in soft tissue and skin, of 15 x 10 x 28 cm on the right upper lip. The incisional biopsy established of deep aggressive angiomyxoma diagnosis. In December 2016 the vulvoperineal tumor was extirpated. The Department of Pathological Anatomy reported a tumor of 30 x 25 x 7 cm, with estrogen and progesterone positive receptors, and intensity +++ in more than 80%. The patient received adjuvant treatment with tamoxifen. Currently the patient is asymptomatic and under follow-up. CONCLUSIONS: The use of antiestrogenic agents has been shown to decrease tumor size. This protocol requires less aggressive surgical approaches. Given the tendency of these tumors to recur, it is necessary to provide long-term follow-up considering the treatment with antiestrogens as a maintenance therapy.

[Factors associated with jejunostomy complications]. / Factores asociados a complicaciones de yeyunostomía.

BACKGROUND: There are few studies in the literature that analyze jejunostomy complications and their associated factors. AIMS: To describe the rate of complications and analyze the factors associated with their development in a tertiary reference center in Mexico. METHODS: A retrospective study was carried out on patients that underwent Witzel jejunostomy within the time frame of January 2002 to December 2011. Patient demographic, clinical, and laboratory data were collected at the time of hospital admission and during follow-up. The factors associated with the development of complications were analyzed using the chi square test for categorical variables and the Student's t test for the continuous variables. Statistical significance was considered with a p<.05. RESULTS: One hundred and twelve patients (57 men) with a mean age of 54.2 years were included in the study. Forty-eight patients (42.9%) presented with postoperative complications. The most frequent surgical complications were severe sepsis (11.6%) and septic shock (7.14%) and the most frequent medical complications were pleural effusion (7.14%) and aspiration pneumonia (6.25%). The factors that were significantly associated with the development of complications were obesity, lymphocytopenia, and hypoalbuminemia. CONCLUSIONS: Jejunostomy is associated with an elevated medical, as well as surgical, complication frequency. Even though it has been established as a better alternative to parenteral nutrition, its associated morbidity should be taken into consideration before establishing its routine use as a means of nutritional support, especially in patients with factors associated with the development of complications.

[Small bowel tumors: experience at the Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán"]. / Tumores de intestino delgado: experiencia en el Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán"

BACKGROUND: Malignant tumors of the small bowel are uncommon and include multiple histologic strains, which helps explain the existing limited understanding of them. The aim of this study was to evaluate surgically treated small bowel tumors and to determine the clinical and pathological characteristics that can have an impact on patient outcome. METHODS: A retrospective, observational, and descriptive study was carried out. The case records of patients with small bowel tumor that were surgically treated at the Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán" from 1990 to August 2011 were analyzed using the SPSS version 17.0 statistical package. RESULTS: Thirty-eight small bowel tumor patients were found that had been operated on within the time frame studied. Fifteen of them were women (39.50%) and 23 were men (60.50%), and the mean age was 55.6 years. The histologic distribution was 13 adenocarcinomas (34.20%), 10 neuroendocrine tumors (26.30%), 8 sarcomas (21.10%) and 4 lymphomas (10.50%). There was an increase in the incidence of sarcomas and adenocarcinomas, whereas lymphomas and neuroendocrine tumors were evenly distributed. CONCLUSIONS: An increase in small bowel tumor incidence in the last few years was observed and adenocarcinoma was the most frequent tumor in the study population. It is important to have a high degree of suspicion for this disease when patients present with symptoms such as gastrointestinal bleeding, bowel obstruction, anemia, and weight loss, because early diagnosis is essential for guaranteeing favorable outcome.

[Gastric duplication in adults: a case report and literature review]. / Duplicación gástrica en adultos; informe de un caso y revisión de la bibliografía.

Duplications of the gastrointestinal tract are a rare congenital malformations that usually presents in the first 2 years of life with symptoms of poor weight gain and abdominal palpable mass. The present is a case report of 41 year-old woman who was evaluated for upper abdominal pain. Upper endoscopy revealed a submucosal mass in the greater curvature of the stomach with initial suspect diagnosis of gastrointestinal stromal tumor. Endoscopic ultrasound confirmed partially cystic submucosal mass which was removed with a distal gastric wedge resection without complications. Histopathological report was congenital gastric duplication.

[Mesenteric solitary fibrous tumor: a case report and literature review]. / Tumor fibroso solitario en mesenterio: reporte de un caso y revisión de la literatura.

Solitary fibrous tumors are a very unusual group of spindle-cell neoplasm of adults; they were described for first time in the 18th century. They locate mainly in parietal and visceral pleura, lung parenchyma and pericardium. There are numerous reports that document their extrapleural location and we can find it in any place in the body, but mesenteric localization is extremely unusual.

[Surgical treatment of rectal cancer]. / Tratamiento quirúrgico del cáncer de recto.

Rectal affection accounts for 30% of colorectal cancer. The standard of treatment is surgical resection, which often is curative. For superior and middle-rectal involvement, low anterior resection (LAR) is the preferred procedure. For tumors involving the lower portion of the rectum, abdominoperineal resection (APR) or LAR are the options of treatment, depending on sphincter involvement. The main surgical objective is to achieve a R0 resection with an appropriated total mesorrectal excision, greater number of lymph nodes and negative distal and radial margins. These surgical parameters have been used as quality indicators and have prognostic implications in terms of overall and disease-free survival. Total mesorectal excision with preservation of hypogastric nerves has shown a reduction in rates of sexual and bladder dysfunction as well as lower local recurrence. At specialized centers such procedures are performed by minimal invasive surgery; however the number of meta-analysis is scarce.

[Gastric Schwannoma: a case report and literature review]. / Schwannoma gástrico: presentación de un caso y revisión de la literatura.

We report a 49-year old male with diagnosis of gastric schwannoma who underwent subtotal gastrectomy. We describe clinicopathological and immunohistochemical characteristics of these tumors and performed an extensive literature review. Gastric schwannomas are very rare tumors but they should be taken into account in the differential diagnosis of more common mesenchimal neoplasms like gastrointestinal stromal tumors (GIST). The treatment of choice is surgical resection and their prognosis is very favourable.

[Hereditary non-polyposis colorectal cancer associated with hereditary gastric cancer. A case report.]. / Cáncer colorrectal hereditario no polipósico asociado a cáncer gástrico hereditario. Informe de un caso.

The information regarding the association of gastric cancer and type 2 Lynch syndrome is limited. Previous studies have reported that both entities may be present in the same individual in less than 5% of the cases. The most frequent form of hereditary colorectal cancer is the Lynch syndrome or Hereditary Non-polyposic Colorectal Cancer, which is associated with germ-line mutation mostly of two genes, MLH1 and MSH2, which account for almost 90 percent of all identified mutations. The hereditary diffuse gastric cancer syndrome is caused by a germ-line mutation in the E-cadherin (CDH1) gene; only about 50 families with this syndrome have been reported. We present a case report of a patient who was diagnosed with both syndromes.

[Pancreatic-duodenectomy for invasive colon cancer in a patient with Lynch syndrome. Case report.]. / Pancreatoduodenectomía por cáncer de colon invasor en un paciente con síndrome de Lynch; informe de un caso.

Despite the screening efforts in the general population and particularly in families with hereditary colon cancer, locally advanced colon cancer remains a common clinical problem. In block resection is considered mainstay therapy in these patients. The aim of this report is to present a case of right-sided colon cancer with a medullar phenotype invading the duodenum treated through in block resection. A case of a 54-year-old male with a family history of colon and pancreatic cancer with lower gastrointestinal tract bleeding is presented. Colonoscopy and computed tomography scan showed a tumor in the colonic hepatic flexure invading the duodenum. The patient underwent an in block resection of the right colon, duodenum, pancreas and antrum. The histopathological study showed a T4N0M0 adenocarcinoma invading the duodenum, pancreas and antrum with negative margins. His postoperative evolution was complicated with a pancreatic fistula, which resolved with conservative measures. In conclusion, in block resection is the treatment of choice for locally advanced colon cancer with invasion to duodenum and pancreas and should be performed in high-volume centers familiar with this type of procedures. Key words: pancreaticoduodenectomy, colon cancer, Lynch syndrome, pancreas, surgery, Mexico.

[Gastric giant inflammatory fibroid polyp. case report and literature review]. / Pólipo fibroide inflamatorio gástrico gigante.Reporte de caso y revisión de la literatura.

The gastric inflammatory fibroid polyp (GIFP) is a rare benign tumor that is localized mainly in the antrum and presents endoscopically as a submucosal mass. The usual reported presenting size ranges among 1 and 5 cm. In this case report we present the largest GIFP published in the literature in a very uncommon localization, this is a 9.1 x 6.3 cm lesion in the gastric fundus.

Single nucleotide polymorphisms (SNPs) at CDH1 promoter region in familial gastric cancer.

INTRODUCTION: Gastric cancer is the most frequent gastrointestinal malignancy in Mexico and the proportion of patients younger than 40 years is one of the highest reported in the world literature. Recently several families with familial diffuse gastric cancer have been identified at the National Institute of Medical Sciences and Nutrition. Germline mutations in the E-cadherin gene (CHD1) have been described that result in the development of diffuse hereditary gastric cancer in young patients. METHODS: The complete coding sequence at exons 1 to 16 and the promoter region of CDH1 was amplified by polymerase chain reaction in peripheral blood samples of two patients with early onset familial diffuse gastric cancer. RESULTS: No germline inactivating mutations of CHD1 were found on either patient. Single nucleotide polymorphisms -160 C->A were detected in the promoter region of CDH1 in both patients. CONCLUSIONS: The polymorphism -160 C->A theoretically confers an increased risk of developing diffuse gastric cancer. The relatives of these patients may an increased risk of gastric cancer among other tumors. There is presently not enough evidence to consider the -160 C->A polymorphism an etiologic factor of diffuse gastric cancer in these patients since the frequency and type of genetic alterations of CDH1 are largely unknown in the Mexican population. It will be necessary to conduct epidemiologic studies in the Mexican population to determine the influence that genetic alterations have on the genesis of diffuse gastric carcinoma.