Doble revisión de colon derecho vs revisión simple durante lacolonoscopia para la detección de pólipos y adenomas de colon: revisión sistemática de la literatura

El tamizaje por colonoscopia es un método efectivo para prevenir cáncer de colon a traves de la detección de pólipos sobre los cuales se desarrolla en un mayor porcentaje el cáncer de colon; sin embargo la detección de estas lesiones varía en los diferentes segmentos del colon y de ellos en colon derecho su tasa detección suele ser menor. Objetivo: El objetivo de este estudio es evaluar si la doble revisión endoscópica de colon derecho durante la colonoscopia es un mecanismo para mejorar su rendimiento en cuanto a la tasa de detección de pólipos (TDP) y la tasa de detección de adenomas (TDA). Materiales y métodos: Revisión sistemática y metaanálisis de la literatura de estudios clínicos aleatorizados que realizaron una doble revisión del colon derecho por colonoscopia comparado con una revisión simple para mejorar la detección de pólipos y adenomas. El protocolo de esta revisión se publicó en PROSPERO bajo el código CRD42022356509. Resultados: Se incluyeron 5 estudios que incluyeron 2729 participantes. Se informó la detección de pólipos en 585/1197 pacientes (48,87%) después de la segunda revisión, en comparación con 537/1206 (44,52%) de los pacientes que recibieron una única examinación (p < 0,05), para un RR combinado de 1,09 (IC 95%: 0,97-1,23) (I2 fue de 44%). Se informó la detección de adenomas en 830/1513 pacientes (54,75%) después de la segunda revisión, en comparación con 779/1509 (51,62%) de los pacientes que recibieron una única examinación (p < 0,05), para un RR combinado de 1,06 (IC 95%: 1,00-1,13) (I2 fue de 0%). Conclusión: La segunda examinación del colon derecho por colonoscopia puede tener una modesta mejoría en la detección de pólipos y adenomas.

Colonoscopy screening is an effective method to prevent colon cancer through the detection of polyps on which colon cancer develops in a higher percentage; however, the detection of these lesions varies in the different segments of the colon and the detection rate of them in the right colon is usually lower. Objective: The objective of this study is to evaluate whether double endoscopic revision of the right colon during colonoscopy is a mechanism to improve its performance in terms of polyp detection rate (TDP) and adenoma detection rate (ADR). Materials and methods: Systematic review and meta-analysis of the literature including randomized clinical trials that evaluated repeat right-sight examination by colonoscopy compared to standard view to improve detection of polyps and adenomas. The protocol for this decision was published in PROSPERO under the code CRD42022356509. Results: Five studies involving 2729 participants were included. Polyp detection was reported in 585/1197 patients (48.87%) after the second review, compared with 537/1206 (44.52%) of patients who received a single examination (p< 0.05), for a combined RR of 1.09 (95% CI: 0.97-1.23) (I2 was 44%). Detection of adenomas was reported in 830/1513 patients (54.75%) after the second review, compared with 779/1509 (51.62%) of patients who received a single examination (p < 0.05), for a combined RR of 1.06 (95% CI: 1.00-1.13) (I2 was 0%). Conclusion: Second examination of the right colon by colonoscopy may have a modest improvement in the detection of polyps and adenomas.

[E-VAC therapy as treatment of complications in gastrointestinal surgery in a gastroenterology reference center in Colombia: Case series]. / Terapia E-VAC como tratamiento de complicaciones en cirugía gastrointestinal en centro de referencia de gastroenterología en Colombia: Serie de casos.

Gastrointestinal postoperative anastomotic leaks and fistulas occur frequently and many are managed surgically; however, endoscopic interventions have shown to improve healing outcomes and length of hospital stay. The experience of vacuum-assisted closure therapy (E-VAC) is described, in complications such as fistulas and postoperative anastomotic leaks, in a gastrointestinal reference center in Colombia. A case series study was carried out in patients with anastomotic leaks and fistulas at different levels of the digestive tract, treated by E-VAC, by the Gastroenterology Service in Colombia, during a period from February 2019 to November 2021. Sociodemographic, clinical and surgical variables were described. 6 cases are described, 4 from lower digestive tract and 2 from upper digestive tract. 83% were men; the mean age was 51.8 years (+/-17.5). The indication for E-VAC was colorectal anastomotic fistula in 66%; the most frequent anatomical location was near the anal region (66%), less frequently at the level of the cardia (16%) and esophagus (16%). The size of the defect was described between 20 and 80% in patients undergoing E-VAC therapy, with an average hospitalization length of stay of 22.5 days, with an average number of exchanges of seven per patient. Anastomotic leaks and fistulas are potentially fatal complications in gastrointestinal surgery. E-VAC therapy has shown to be effective and safe, promoting defect closure and drainage of collections present, also decreasing the length of hospital stay.

Multimodal Endoscopic Management of Esophageal Perforations as a Complication of Peroral Endoscopic Myotomy for a Zenker's Diverticulum.

Zenker's diverticulum develops because of a weakness in Killian's triangle, leading to a mucosal and submucosal herniation. Its treatment has evolved from morbid surgical interventions to safer endoscopic techniques such as peroral endoscopic myotomy (Z-POEM). Despite being a safe technique, Z-POEM is not free of complications such as perforations, bleeding, pneumoperitoneum, and pneumothorax, for which new endoscopic techniques have been developed. We present the case of a 53-year-old man taken to a Z-POEM who postoperatively presented dehiscence of the mucosotomy and a mediastinal collection, managed with a vacuum-assisted endoscopic closure device.

Terapia E-VAC como tratamiento de complicaciones en cirugía gastrointestinal en centro de referencia de gastroenterología en Colombia: Serie de casos

Las fístulas y dehiscencias anastomóticas postoperatorias gastrointestinales se presentan de forma frecuente y muchas son manejadas quirúrgicamente, sin embargo, las intervenciones endoscópicas han mostrado mejorar desenlaces de curación y tiempo de estancia hospitalaria. Se describe la experiencia de la terapia de cierre asistida por vacío (E-VAC), en el manejo de fístulas y dehiscencias anastomóticas postoperatorias, en un centro de referencia gastrointestinal en Colombia. Se realizó un estudio serie de casos en pacientes con dehiscencia de anastomosis y fístula a diferentes niveles del tracto digestivo, tratados mediante E-VAC, por el servicio de gastroenterología de la clínica universitaria Colombia, en Bogotá, durante un periodo comprendido de febrero 2019 y noviembre 2021. Se describieron variables sociodemográficas, clínicas y quirúrgicas. Se describen 6 casos, 4 de tracto digestivo inferior y 2 de tracto digestivo superior. El 83% fueron hombres, la edad media fue de 51,8 años (+/-17,5). La indicación de E-VAC fue fístula anastomótica colorrectal en el 66%, siendo la ubicación anatómica más frecuente la anastomosis colorrectal (66%), con menor frecuencia a nivel de los cardias (16%) y esófago (16%). El tamaño del defecto se describió entre el 20 y el 80% en pacientes sometidos a terapia E-VAC, siendo el tiempo promedio de hospitalización 22.5 días con un número de recambios promedio de siete por paciente. Las fugas y fístulas anastomóticas son complicaciones potencialmente mortales en pacientes llevados a intervenciones quirúrgicas gastrointestinales, en las que la terapia E-VAC ha mostrado ser eficaz y segura, promoviendo el cierre del defecto y el drenaje de colecciones presentes, igualmente disminuyendo el tiempo de estancia hospitalaria.

Gastrointestinal postoperative anastomotic leaks and fistulas occur frequently and many are managed surgically; however, endoscopic interventions have shown to improve healing outcomes and length of hospital stay. The experience of vacuum-assisted closure therapy (E-VAC) is described, in complications such as fistulasand postoperative anastomotic leaks, in a gastrointestinal reference center in Colombia. A case series study was carried out in patients with anastomotic leaks and fistulasat different levels of the digestive tract, treated by E-VAC, by the Gastroenterology Service in Colombia, during a period from February 2019 to November 2021. Sociodemographic, clinical and surgical variables were described. 6 cases are described, 4 from lower digestive tract and 2 from upper digestive tract. 83% were men; the mean age was 51.8 years (+/-17.5). The indication for E-VAC was colorectal anastomotic fistula in 66%; the most frequent anatomical location was near the anal region (66%), less frequently at the level of the cardia (16%) and esophagus (16%). The size of the defect was described between 20 and 80% in patients undergoing E-VAC therapy, with an average hospitalization length of stay of 22.5 days, with an average number of exchanges of seven per patient. Anastomotic leaks and fistulasare potentially fatal complications in gastrointestinal surgery. E-VAC therapy has shown to be effective and safe, promoting defect closure and drainage of collections present, also decreasing the length of hospital stay.

[Double review of the right colon vs single review during colonoscopy for the detection of colon polyps and adenomas: systematic review of the literature]. / Doble revisión de colon derecho vs revisión simple durante la colonoscopia para la detección de pólipos y adenomas de colon: revisión sistemática de la literatura.

Colonoscopy screening is an effective method to prevent colon cancer through the detection of polyps on which colon cancer develops in a higher percentage; however, the detection of these lesions varies in the different segments of the colon and the detection rate of them in the right colon is usually lower. OBJECTIVE: The objective of this study is to evaluate whether double endoscopic revision of the right colon during colonoscopy is a mechanism to improve its performance in terms of polyp detection rate (TDP) and adenoma detection rate (ADR). MATERIALS AND METHODS: Systematic review and meta-analysis of the literature including randomized clinical trials that evaluated repeat right-sight examination by colonoscopy compared to standard view to improve detection of polyps and adenomas. The protocol for this decision was published in PROSPERO under the code CRD42022356509. RESULTS: Five studies involving 2729 participants were included. Polyp detection was reported in 585/1197 patients (48.87%) after the second review, compared with 537/1206 (44.52%) of patients who received a single examination (p< 0.05), for a combined RR of 1.09 (95% CI: 0.97-1.23) (I2 was 44%). Detection of adenomas was reported in 830/1513 patients (54.75%) after the second review, compared with 779/1509 (51.62%) of patients who received a single examination (p < 0.05), for a combined RR of 1.06 (95% CI: 1.00-1.13) (I2 was 0%). CONCLUSION: Second examination of the right colon by colonoscopy may have a modest improvement in the detection of polyps and adenomas.

Prevalencia y localización gástrica del Helicobacter pylori en pacientes con atrofia y metaplasia intestinal en una institución de alta complejidad en Colombia / Prevalence and Gastric Location of Helicobacter pylori in Patients with Intestinal Atrophy and Metaplasia in a Tertiary Care Institution in Colombia

Resumen Introducción: Helicobacter pylori juega un papel fundamental en la cascada de carcinogénesis del cáncer gástrico tipo intestinal; sin embargo, no existe claridad respecto a su prevalencia en condiciones preneoplásicas que generan cambio en el microambiente de la mucosa. Actualmente se recomienda la vigilancia endoscópica por protocolo de Sydney cada 2 a 3 años, pero no es clara la presencia de H. pylori en la región subcardial y el fondo gástrico. Objetivo: determinar la prevalencia y localización gástrica del H. pylori en pacientes con condiciones preneoplásicas. Materiales y métodos: estudio de corte transversal en adultos con diagnóstico previo de atrofia o metaplasia intestinal que ingresaron a endoscopia de control, a quienes se les tomaron biopsias del antro, cuerpo, incisura angularis, región subcardial y fondo gástrico. Se realizó un análisis descriptivo de los resultados por regiones gástricas. Resultados: se recolectó la información de 160 pacientes con una prevalencia de H. pylori del 37,5 %, la cual fue en aumento de proximal a distal iniciando con una prevalencia de 12,5 % en la región subcardial hasta una prevalencia de 30,6 % en el antro; hubo un patrón similar en la prevalencia de lesiones preneoplásicas. Se observó una mayor presencia de lesiones avanzadas (displasia, carcinoma) en la incisura. Conclusiones: la prevalencia de H. pylori en condiciones premalignas evidenció una mayor presencia en las regiones distales en comparación con las proximales, y es más frecuente en la región antral y menor en la región subcardial. En cuanto a la distribución gástrica de atrofia y metaplasia, se encontró mayor compromiso en el antro y la incisura, y es baja en la región subcardial y el fondo.

Abstract Introduction: Helicobacter pylori infection plays a critical role in the carcinogenesis cascade of intestinal gastric cancer. However, its prevalence in preneoplastic conditions generating changes in the gastric mucosa is unclear. Currently, endoscopic surveillance using the Sydney protocol is suggested every 2 to 3 years, but the presence of H. pylori infection in the subcardial region and gastric fundus is ill-defined. Objective: to determine the prevalence and gastric location of H. pylori infection in patients with preneoplastic conditions. Materials and methods: a cross-sectional study in adults with a previous diagnosis of atrophy or intestinal metaplasia who entered control endoscopy and were antrum, body, incisura angularis, subcardial region, and gastric fundus biopsied. A descriptive analysis of the results by gastric regions was performed. Results: data from 160 patients with a prevalence of H. pylori of 37.5% were collected. It increased from proximal to distal, starting with a 12.5% prevalence in the subcardial region to a 30.6% prevalence in the antrum. In addition, there was a similar pattern in the prevalence of preneoplastic lesions. Furthermore, advanced lesions (dysplasia, carcinoma) were observed in the incisura. Conclusions: the prevalence of H. pylori in precancerous conditions showed a high presence in the distal regions compared to the proximal ones, and it is more frequent in the antrum and lower in the subcardial region. As for the gastric distribution of atrophy and metaplasia, more involvement was found in the antrum and angular notch and lower in the subcardial region and fundus.

Long-Term Comparison between Waste Paper Fly Ash and Traditional Binder as Hydraulic Road Binder Exposed to Sulfate Concentrations.

Sulfate attack is one of the drawbacks of cementitious materials for stabilized soils. In the current study, a durability comparison of stabilized soil with cement (Type IV) and waste paper fly ash (WPFA) was conducted. First, the treated soil's unconfined compressive strength (UCS) was tested. Next, the treated soil was subjected to various wetting/drying cycles with various sulfate concentrations and temperatures for a year. In the meantime, samples were taken for DRX, FTIR, and TGA microstructural analyses. Additionally, samples were manufactured to track swelling over an 800 day period. The outcomes show that WPFA's UCS remained constant. Furthermore, ettringite development can be seen in the microstructural studies, however testing on linear displacement over 800 days revealed no significant changes in swelling. Finally, SEM was used to verify the ettringite formation at 360 days in order to confirm the previous findings. All the results indicated that stabilizing soil with 5% of WPFA and 3% of cement IV is possible even in presence of high sulfate concentrations, while maintaining the durability of the structure.

Waste paper ash as a hydraulic road binder: Hydration, mechanical and leaching considerations.

Waste paper fly ash (WPFA) and bottom ash (WPBA), derived from fluidised bed combustion of a paper recycling plant, exhibit cementitious properties owing to its mineralogical composition, and hence, could be proposed as a hydraulic binder. However, it may also contain some traces of heavy metals. Considering it is necessary to understand the effect of reusing any kind of waste on the environment, this study proposes of reusing WPFA/WPBA as a hydraulic road binder by evaluating its mineralogical composition and leaching activity. Chemical, physical, and mineralogical properties of raw WPFA/WPBA and the microstructural evolution of binders were carried out. Results showed that both ashes undergo hydration reactions while showing some cementitious properties by forming C-S-H gel, Friedel's salt, and calcite. According to the European standard EN 13282-1, both WPFA and WPBA can be categorised as N1 considering they reach 5.3 and 3.6 MPa, respectively, at 56 days. Furthermore, the mechanical performance of various soils was improved by using WPFA and WPBA as a binder. From the environmental point of view, the amount of barium in WPFA and WPBA, which is the main problem, was significantly decreased by using these ashes as a binder.

Diagnóstico y tratamiento actual de la gastroparesia: una revisión sistemática de la literatura / Current diagnosis and treatment of gastroparesis: A systematic literature review

Resumen El vaciamiento gástrico normal refleja un esfuerzo coordinado entre diferentes regiones del estómago y el duodeno, y también una modulación extrínseca por parte del sistema nervioso central y factores del intestino distal. Los principales eventos relacionados con el vaciamiento gástrico normal incluyen el fondo de relajación para acomodar la comida, contracciones antrales para triturar partículas grandes de comida, contracción pilórica para permitir la liberación de comida del estómago y coordinación antropiloroduodenal de los fenómenos motores de relajación. La dismotilidad gástrica incluye el vaciamiento tardío del estómago (gastroparesia), vaciamiento gástrico acelerado (síndrome de dumping) y otras disfunciones motoras, como el deterioro del fondo de distensión, que se encuentra con mayor frecuencia en la dispepsia funcional. Los síntomas de la gastroparesia son inespecíficos y pueden simular otros trastornos estructurales.

Abstract Normal gastric emptying reflects a coordinated effort between different regions of the stomach and the duodenum, and also an extrinsic modulation by the central nervous system and distal bowel factors. The main events related to normal gastric emptying include relaxation of the fundus to accommodate food, antral contractions to triturate large food particles, the opening of the pyloric sphincter to allow the release of food from the stomach, and anthropyloroduodenal coordination for motor relaxation. Gastric dysmotility includes delayed emptying of the stomach (gastroparesis), accelerated gastric emptying (dumping syndrome), and other motor dysfunctions, e.g., deterioration of the distending fundus, most often found in functional dyspepsia. The symptoms of gastroparesis are nonspecific and may mimic other structural disorders.

Narrow-Band Imaging for Detection of Neoplasia at Colonoscopy: A Meta-analysis of Data From Individual Patients in Randomized Controlled Trials.

BACKGROUND & AIMS: Adenoma detection rate (ADR) is an important quality assurance measure for colonoscopy. Some studies suggest that narrow-band imaging (NBI) may be more effective at detecting adenomas than white-light endoscopy (WLE) when bowel preparation is optimal. We conducted a meta-analysis of data from individual patients in randomized controlled trials that compared the efficacy of NBI to WLE in detection of adenomas. METHODS: We searched MEDLINE, EMBASE, and Cochrane Library databases through April 2017 for randomized controlled trials that assessed detection of colon polyps by high-definition WLE vs NBI and from which data on individual patients were available. The primary outcome measure was ADR adjusted for bowel preparation quality. Multilevel regression models were used with patients nested within trials, and trial included as a random effect. RESULTS: We collected data from 11 trials, comprising 4491 patients and 6636 polyps detected. Adenomas were detected in 952 of 2251 (42.3%) participants examined by WLE vs 1011 of 2239 (45.2%) participants examined by NBI (unadjusted odds ratio [OR] for detection of adenoma by WLE vs NBI, 1.14; 95% CI, 1.01-1.29; P = .04). NBI outperformed WLE only when bowel preparation was best: adequate preparation OR, 1.07 (95% CI, 0.92-1.24; P = .38) vs best preparation OR, 1.30 (95% CI, 1.04-1.62; P = .02). Second-generation bright NBI had a better ADR than WLE (second-generation NBI OR, 1.28; 95% CI, 1.05-1.56; P = .02), whereas first-generation NBI did not. NBI detected more non-adenomatous polyps than WLE (OR, 1.24; 95% CI, 1.06-1.44; P = .008) and flat polyps than WLE (OR, 1.24; 95% CI, 1.02-1.51; P = .03). CONCLUSIONS: In a meta-analysis of data from individual patients in randomized controlled trials, we found NBI to have a higher ADR than WLE, and that this effect is greater when bowel preparation is optimal.

Presentación inusual de infección por Helicobacter pylori: gastritis asociada a cuerpos de Russell, patología infrecuente y poco conocida / Unusual presentation of infection by Helicobacter pylori: gastritis associated with Russell bodies, infrequent and poorly understood pathology

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Unusual presentation of infection by Helicobacter pylori: gastritis associated with Russell bodies, infrequent and poorly understood pathology.

Russell bodies gastritis is a very rare disease, with few cases reported in literature, and characterized by the finding of plasma cells with eosinophilic intracytoplasmic inclusions in the gastric mucosa, called Mott cells. Although it has been partnered since its first description to Helicobacter pylori infection, it is important to considered differential diagnoses such as lymphoplasmacytic lymphoma, mucosa-associated lymphoid tissue (MALT) lymphoma, plasmacytoma and signet ring cell carcinom. In this case report, we address a patient with histologic confirmation and her follow up.

Guía de práctica clínica para el uso de ultrasonido endoscópico en pancreatitis crónica, lesiones quísticas y sólidas del páncreas en adultos / Clinical practice guideline for the use of endoscopic ultrasound in chronic pancreatitis, solid and cystic lesions of pancreas in adults

Objetivo: brindar una guía de práctica clínica con la evidencia más reciente para el uso de ultrasonido endoscópico en pancreatitis crónica y lesiones quísticas y sólidas en adultos, la cual está dirigida a pacientes, personal asistencial, administrativo y entes gubernamentales de los servicios de atención en Colombia. Materiales y métodos: esta guía fue desarrollada por un equipo multidisciplinario con apoyo de la Asociación Colombiana de Gastroenterología, el Grupo Cochrane ITS y el Instituto de Investigaciones Clínicas de la Universidad Nacional de Colombia. Se desarrollaron preguntas clínicas relevantes y se realizó la búsqueda de guías nacionales e internacionales en bases de datos especializadas. Las guías existentes fueron evaluadas en términos de calidad y aplicabilidad; ninguna de ellas cumplió con el criterio de adaptación, por lo que se decidió construir una guía de novo. El Grupo Cochrane realizó la búsqueda sistemática de la literatura. Las tablas de evidencia y recomendaciones fueron realizadas con base en la metodología GRADE. Las recomendaciones de la guía fueron socializadas en una reunión de expertos con entes gubernamentales y pacientes. Resultados: se desarrolló una guía de práctica clínica basada en la evidencia para el uso del ultrasonido endoscópico en pancreatitis crónica y lesiones quísticas y sólidas en adultos en Colombia, con recomendaciones específicas para la utilización de USE. Conclusiones: el adecuado uso del ultrasonido endoscópico permitirá el diagnóstico oportuno de lesiones del páncreas en pacientes colombianos, lo que llevará a mejorar su pronóstico.

Objective: To provide an evidence-based clinical practice guideline for the use of endoscopic ultrasound in chronic pancreatitis, solid and cystic lesions of pancreas in adults which can be used by patients, caregivers, administrative and government bodies at all levels of care in Colombia. Materials and Methods: This guide was developed by a multidisciplinary team with the support of the Colombian Association of Gastroenterology, Cochrane STI Group and Clinical Research Institute of the Universidad Nacional de Colombia. Relevant clinical questions were developed and the search for national and international guidelines in databases was performed. Existing guidelines were evaluated for quality and applicability. None of the guidelines met the criteria for adaptation, so the group decided to develop a de novo guideline. Systematic literature searches were conducted by the Cochrane Group. The tables of evidence and recommendations were made based on the GRADE methodology. The recommendations of the guide were socialized in a meeting of experts with government agencies and patients. Results: An evidence-based Clinical Practice Guidelines for the screening of colorectal cancer was developed for the Colombian context. Conclusions: The opportune detection of colon cancer would have an impact of the disease in Colombia.

Presentación atípica de esofagitis herpética / Atypical Herpes Esophagitis

La infección esofágica por virus del herpes es una entidad rara que se ha reportado con mayor frecuencia en pacientes inmunocomprometidos. Esta infección afecta principalmente a pacientes con virus de la inmunodeficiencia humana (VIH) y a pacientes que reciben terapia inmunosupresora o quimioterapia. La severidad de los síntomas está relacionada con el grado de afectación esofágica, siendo la odinofagia la presentación clínica más frecuente. Por otro lado, el hallazgo endoscópico más común es la presencia de úlceras múltiples bien circunscritas que se presentan típicamente en el tercio distal del esófago. El tratamiento estándar descrito es el aciclovir oral por 1 a 2 semanas.

Esophageal herpes viral infections are rare condition that have been reported most frequently in immunocompromised patients. This infection primarily affects patients with human immunodeficiency virus (HIV) and patients receiving immunosuppressants or chemotherapy. The severity of symptoms is related to the degree of esophageal involvement. Odynophagia is the most common clinical presentation while the most common endoscopic finding is multiple well-circumscribed ulcers. These typically occur in the distal third of the esophagus. Standard treatment is oral acyclovir for one to two weeks.

Utilidad del ultrasonido endoscópico en el diagnóstico de pancreatitis crónica. La importancia de un diagnóstico temprano / The utility of endoscopic ultrasound for diagnosing chronic pancreatitis and the importance of early diagnosis

El ultrasonido endoscopico (USE) constituye hoy en dia la prueba mas sensible para el diagnostico de pancreatitiscr¨®nica temprana. El hecho de diagnosticar precozmente esta patolog¨ªa es de fundamental relevancia a la hora de intervenir oportunamente sobre los posibles factores etiologicos, en el intento de limitar la respuesta infl amatoria, tratando de frenar y en algunos casos evitar la progresi¨®n a pancreatitis cronica avanzada y debilitante. La agudeza diagnostica del USE en pancreatitis cronica (PC) se ha visto favorecida con la utilización de criterios estrictos y con la creación de sistemas de puntuación, que evolucionaron hastael nacimiento de la clasificación de Rosemont, que de todas, es la más restrictiva, teniendo como objetivoestandarizar estos criterios y asignar diferentes valores a los hallazgos endosonográficos encontrados en la pancreatitis crónica en fase temprana o tardía. Siendo esta patología de difícil diagnóstico utilizando los métodos convencionales, en especial en las fases tempranas, el USE emerge como una excelente alternativa diagn¨®stica y terapéutica para el estudio de este grupo de pacientes.

diagnosis of this disease is of fundamental importance for timely intervention to limit the infl ammatory responsesto possible etiological factors and to slow or prevent progression to advanced and debilitating chronic pancreatitis. The diagnostic accuracy of EUS for chronic pancreatitis (CP) has been enhanced with the use of strict criteria and the creation of scoring systems which have evolved into the Rosemont classifi cation.This is the most restrictive classifi cation system of all: it aims at standardizing criteria and assigning values to endoscopic ultrasound fi ndings of chronic pancreatitis found in early or late phases.Since this disease is diffi cult to diagnose using conventional methods, especially in its early stages, EUS has emerged as an excellent diagnostic and therapeutic alternative for the study of this group of patients.

Correlación de los hallazgos endoscópicos e histológicos en el diagnóstico de metaplasia intestinal gástrica en pacientes referidos para endoscopia digestiva alta en la Clínica Colombia / Correlation of endoscopic and histological findings in diagnosis of gastrointestinal metaplasia in patients referred to the Clinica Colombia for upper endoscopies

Introducción: La metaplasia intestinal es un paso más hacia el proceso final conocido del cáncer gástrico. Su correcta identificación endoscópica con toma de biopsia es vital para su confirmación histológica. No conocemos en nuestro medio la relación entre los hallazgos endoscópicos sospechosos de metaplasia intestinal y su confirmación histológica. El presento estudio busca determinar la verdadera correlación entre los hallazgos endoscópicos sugestivos de metaplasia y su contraparte histológica. Métodos: Estudio observacional analítico, realizado en la Clínica Colombia donde se incluyeron pacientes con sospecha endoscópica de metaplasia intestinal, excluyendo pacientes con antecedente previo de metaplasia y con cáncer gástrico previo. La evaluación estadística se realizó con el software estadístico STATA 11. Resultados: Se identificaron un total de 766 pacientes con sospecha endoscópica de metaplasia intestinal. En 543 de ellos se encontró confirmación histológica equivalente a un 70% del total de la muestra. Los hallazgos histológicos más frecuentes en el grupo en el que no se encontró correlación fueron gastritis crónica, gastropatía reactiva e hiperplasia foveolar entre otros. El valor predictivo positivo de los hallazgos endoscópicos fue cercano al 71%. Conclusiones: Aunque la correlación fue cercana al 70%, se requieren de estudios prospectivos, multicéntricos y con cromoendoscopia, con el fin de evaluar la concordancia respectiva entre los dos métodos y determinar variables endoscópicas predictoras de severidad, y tipo de metaplasia para determinar protocolos de seguimiento para este tipo de pacientes.

Introduction: Intestinal metaplasia is one step towards the final process known as gastric cancer. Correct identification through a biopsy taken endoscopically is vital for histological confirmation. In our surroundings the relationship between endoscopic findings when intestinal metaplasia is suspected and histological confirmation are not understood. This study aims to determine the true correlation between endoscopic findings suggestive of metaplasia and their histological counterparts. Methods: This was an observational and analytical study undertaken at the Clinica Colombia. Patients who were suspected of having intestinal metaplasia following endoscopic examinations were included. Patients with prior histories of metaplasia and gastric cancer were excluded. Statistical evaluation was performed using STATA 11. Results: A total of 766 patients suspected of having intestinal metaplasias following endoscopic examination were included. 543 (70%) were confirmed histologically. Patients who most frequently had no correlation between suspicion following endoscopy and histological findings included those with chronic gastritis, foveolar hyperplasia, and reactive gastropathy. The positive predictive value of endoscopic findings was close to 71%. Conclusions: Although the correlation was close to 70%, prospective and multicenter studies, as well as studies using chromoendoscopy, are needed in order to evaluate agreement between the two methods, to determine predictive endoscopic variables for severity and for types of metaplasia, and to determine protocols for monitoring these patients.

Quemadura de vía digestiva por ácido muriático: Reporte de caso y revisión de la literatura / Muriatic acid: digestive exposure, case report and literature review

Las quemaduras del tracto digestivo generan gran comorbilidad en el paciente expuesto, por su capacidad de lesión y dependen si se genera por álcali o por ácido. El momento ideal de endoscopia aún es debatido y las secuelas de estos pacientes pueden ser devastadoras. Presentamos el caso de una paciente con intento suicida tras ingerir ácido muriático, sus hallazgos endoscópicos, complicaciones y manejo de estos.

Digestive tract burns can create high levels of comorbidity in an exposed patient although these levels depend on the different capacities to cause harm of alkalis and acids. The ideal moment for endoscopy in these cases is currently being debated as a patient’s post burn reactions may be devastating. We present the case of a patient who attempted to commit suicide by ingesting muriatic acid including clinical findings, complications and management.