Efficacy and Safety of Endoscopic Submucosal Dissection for Superficial Gastric Neoplasms: A Latin American Cohort Study.

BACKGROUND/AIMS: Endoscopic submucosal dissection (ESD) is the preferred technique for treating early gastric cancer (EGC). However, very few studies have been conducted in South America. This study aimed to assess the efficacy and safety of ESD for EGC. METHODS: We analyzed data from a prospective cohort from 2013 to 2020. A total of 152 superficial gastric neoplasms that fulfilled the absolute or expanded criteria for ESD were included. Outcomes were en bloc, R0, and curative resection rates, incidence of adverse events, and length of procedure. RESULTS: The age of the enrolled patients was 68.4±11.3 years. The number of included patients based on the absolute and expanded indications was 150 and 2, respectively. En bloc, R0, and curative resections were achieved in 98.0%, 96.1%, and 89.5% of the cases, respectively. Bleeding and perforation were reported in 5.9% and 6.6% of the cases, respectively. Histopathological examination revealed lowgrade dysplasia, high-grade dysplasia, well-differentiated adenocarcinoma, and poorly differentiated adenocarcinoma in 13, 20, 117, and 2 cases, respectively. CONCLUSION: Our study shows that ESD performed by properly trained endoscopists in reference centers is safe and effective, with comparable therapeutic outcomes to those reported in the Eastern series.

Peroral endoscopic myotomy in a pediatric patient with refractory achalasia: a case report and review of the literature.

A 15-year-old male patient presented with dysphagia, regurgitation, weight loss and retrosternal pain. The diagnosis of achalasia was made 4 years before. The esophagogram revealed severe esophagus dilatation and the classic "bird-beak" termination. A Heller myotomy plus fundoplication and endoscopic balloon dilatation were conducted four months previously. Nevertheless, the symptoms persisted and the last high-resolution manometry study still showed achalasia type II. The patient underwent a peroral endoscopic esophageal myotomy (POEM). POEM is a feasible and safe procedure for experienced and properly-equipped health care delivery centers and could be used as a rescue treatment in refractory achalasia. We present the youngest patient with achalasia in our region who had a successful response to rescue POEM.

Peroral endoscopic myotomy in a pediatric patient with refractory achalasia: a case report and review of the literature

A 15-year-old male patient presented with dysphagia, regurgitation, weight loss and retrosternal pain. The diagnosis of achalasia was made 4 years before. The esophagogram revealed severe esophagus dilatation and the classic "bird-beak" termination. A Heller myotomy plus fundoplication and endoscopic balloon dilatation were conducted four months previously. Nevertheless, the symptoms persisted and the last high-resolution manometry study still showed achalasia type II. The patient underwent a peroral endoscopic esophageal myotomy (POEM). POEM is a feasible and safe procedure for experienced and properly- equipped health care delivery centers and could be used as a rescue treatment in refractory achalasia. We present the youngest patient with achalasia in our region who had a successful response to rescue POEM.

Un paciente varón de 15 años, con el diagnóstico de acalasia realizado 4 años antes, acudió a evaluación por presentar disfagia, regurgitación, pérdida de peso y dolor restroesternal. El esofagograma baritado evidenció una dilatación severa del esófago y la terminación clásica en "pico de pájaro". El paciente había sido sometido a una miotomía de Heller más fundoplicatura y posteriormente a una dilatación esofágica con balón 4 meses atrás. Sin embargo, los síntomas persistían y la última manometría de alta resolución reveló acalasia tipo II. Finalmente, se realizó una miotomía endoscópica por vía oral (POEM); el cual es un procedimiento seguro y accesible en centros experimentados y debidamente equipados, pudiendo ser una adecuada opción de tratamiento en casos de acalasia refractaria. Presentamos el caso del paciente más joven en nuestra región con acalasia con una respuesta exitosa a un POEM de rescate.

Closure of colonic deep mural injury and perforation with endoclips

INTRODUCTION: colorectal perforations are one of the most feared complications after performing an endoscopic resection. The use of endoclips is considered for the management of these complications. OBJECTIVES: to evaluate the efficacy and safety of the use of endoclips in the management of perforations and deep mural injuries that occur after an endoscopic colorectal resection. METHODS: a prospective cohort of consecutively included patients was used with a diagnosis of perforation or deep mural injury after an endoscopic colorectal resection treated with endoclips in our institution. The rates of perforation and deep mural injury were obtained. The factors associated with an unfavorable evolution after the placement of the endoclips were analyzed. RESULTS: after 342 endoscopic mucosal resections (EMR) and 42 endoscopic submucosal dissections (ESD), there were 25 cases with perforation or deep mural injury. The deep mural injury rate was 3.22 % and 7.14 % in the case of EMR and ESD, respectively. The perforation rate was 1.46 % and 14.29 % in the case of EMR and ESD, respectively. Successful closure with endoclips was achieved in 24 cases (96 %). Only one patient presented an unfavorable evolution (10 %) after successful closure. The factors associated with an unfavorable evolution were the presence of diffuse peritoneal symptoms and a perforation size greater than or equal to 10 mm. CONCLUSION: endoscopic closure with endoclips is effective to avoid surgery in cases of deep mural injury or perforation after an endoscopic resection

No disponible

Closure of colonic deep mural injury and perforation with endoclips.

INTRODUCTION: colorectal perforations are one of the most feared complications after performing an endoscopic resection. The use of endoclips is considered for the management of these complications. OBJECTIVES: to evaluate the efficacy and safety of the use of endoclips in the management of perforations and deep mural injuries that occur after an endoscopic colorectal resection. METHODS: a prospective cohort of consecutively included patients was used with a diagnosis of perforation or deep mural injury after an endoscopic colorectal resection treated with endoclips in our institution. The rates of perforation and deep mural injury were obtained. The factors associated with an unfavorable evolution after the placement of the endoclips were analyzed. RESULTS: after 342 endoscopic mucosal resections (EMR) and 42 endoscopic submucosal dissections (ESD), there were 25 cases with perforation or deep mural injury. The deep mural injury rate was 3.22 % and 7.14 % in the case of EMR and ESD, respectively. The perforation rate was 1.46 % and 14.29 % in the case of EMR and ESD, respectively. Successful closure with endoclips was achieved in 24 cases (96 %). Only one patient presented an unfavorable evolution (10 %) after successful closure. The factors associated with an unfavorable evolution were the presence of diffuse peritoneal symptoms and a perforation size greater than or equal to 10 mm. CONCLUSION: endoscopic closure with endoclips is effective to avoid surgery in cases of deep mural injury or perforation after an endoscopic resection.

[Safety and efficacy of the use of self-expanding metal stents in the management ofunresectable malignant biliary stenosis]. / Seguridad y eficacia del uso de prótesis metálicas autoexpandibles en elmanejo de estenosis malignas de la vía biliar irresecables.

BACKGROUND: In recent years there has been an increase in the use of self-expanding metallic stents (SEMS) in patients with unresectable malignant stenosis of the bile duct. However, in Peru there are no reports on the safety and efficacy of this procedure. OBJECTIVE: To evaluate the safety and efficacy of the use of SEMS in the palliative management of malignant stenosis of the bile duct. MATERIALS AND METHODS: Retrospective cohort. All patients referred for placement of biliary SEMS as part of a palliative treatment between January 2016 and August 2018 were included. Rates of successful placement of SEMS, adequate palliation of the obstruction, and complications associated with the procedure were obtained. The patency of the prosthesis was evaluated during follow-up. Survival was determined after placement of the prosthesis. RESULTS: We included 32 patients with indication of palliative management due to an unresectable malignant stenosis of the bile duct. Pancreatic cancer (56.25%) followed by cholangiocarcinoma (31.25%) were the most frequent etiologies. A successful first-time placement rate of 96.97% was achieved. Adequate palliation of biliary obstruction was achieved in 100% of patients (p<0.05). Two SEMStc migrated during follow-up (6.25%) being managed with the placement of a new SEMSuc. CONCLUSIONS: The placement of SEMS is a safe and effective therapeutic strategy in the palliative management of patients with malignant obstruction of the biliary tract.

Seguridad y eficacia del uso de prótesis metálicas autoexpandibles en el manejo de estenosis malignas de la vía biliar irresecables / Safety and efficacy of the use of self-expanding metal stents in the management of unresectable malignant biliary stenosis

Antecedentes: En los últimos años se ha producido un incremento del uso de prótesis metálicas autoexpandibles (SEMS) en pacientes con estenosis malignas irresecables de la vía biliar. Sin embargo, en Perú no se cuentan con reportes sobre la seguridad y eficacia de este procedimiento. Objetivo: Evaluar la seguridad y eficacia del uso de las SEMS en el manejo paliativo de las estenosis malignas de la vía biliar. Materiales y métodos: Cohorte retrospectiva. Se incluyeron a todos los pacientes referidos para colocación de SEMS biliar como parte de un tratamiento paliativo entre enero del 2016 y agosto del 2018. Se obtuvieron las tasas de colocación exitosa de las SEMS, de paliación adecuada de la obstrucción y de complicaciones asociadas al procedimiento. Se evaluó la patencia de la prótesis durante el seguimiento. Se determinó la supervivencia luego de la colocación de la prótesis. Resultados: Se incluyeron 32 pacientes con indicación de manejo paliativo debido a una estenosis maligna irresecable de la vía biliar. El cáncer de páncreas (56,25%) seguido del colangiocarcinoma (31,25%) fueron las etiologías más frecuentes. Se alcanzó una tasa de colocación exitosa en primera intención de 96,97%. La paliación adecuada de la obstrucción biliar se alcanzó en el 100% de los pacientes (p<0,05). Dos SEMStc migraron durante el seguimiento (6,25%) siendo manejados con la colocación de una nueva SEMSnc. Conclusiones: La colocación de SEMS constituye una estrategia segura, con alta tasa de éxito terapéutico en el manejo paliativo de los pacientes con obstrucción maligna de la vía biliar.

Background: In recent years there has been an increase in the use of self-expanding metallic stents (SEMS) in patients with unresectable malignant stenosis of the bile duct. However, in Peru there are no reports on the safety and efficacy of this procedure. Objective: To evaluate the safety and efficacy of the use of SEMS in the palliative management of malignant stenosis of the bile duct. Materials and methods: Retrospective cohort. All patients referred for placement of biliary SEMS as part of a palliative treatment between January 2016 and August 2018 were included. Rates of successful placement of SEMS, adequate palliation of the obstruction, and complications associated with the procedure were obtained. The patency of the prosthesis was evaluated during follow-up. Survival was determined after placement of the prosthesis. Results: We included 32 patients with indication of palliative management due to an unresectable malignant stenosis of the bile duct. Pancreatic cancer (56.25%) followed by cholangiocarcinoma (31.25%) were the most frequent etiologies. A successful first-time placement rate of 96.97% was achieved. Adequate palliation of biliary obstruction was achieved in 100% of patients (p<0.05). Two SEMStc migrated during follow-up (6.25%) being managed with the placement of a new SEMSuc. Conclusions: The placement of SEMS is a safe and effective therapeutic strategy in the palliative management of patients with malignant obstruction of the biliary tract.

Fasciola hepatica in the common bile duct: spyglass visualization and endoscopic extraction

We report the case of a 60-year-old Peruvian female who was admitted with abdominal pain and jaundice. Cholangioscopy revealed a leaf-like trematode, Fasciola hepatica. This trematode was extracted with a Dormia's basket via endoscopic retrograde cholangiopancreatography (ERCP)

No disponible

Fasciola hepatica in the common bile duct: spyglass visualization and endoscopic extraction.

We report the case of a 60-year-old Peruvian female who was admitted with abdominal pain and jaundice. Cholangioscopy revealed a leaf-like trematode, Fasciola hepatica. This trematode was extracted with a Dormia's basket via endoscopic retrograde cholangiopancreatography (ERCP).

Dilatación con balón de gran diámetro en el manejo de coledocolitiasis de difícil extracción: experiencia clínica / Large balloon dilation for removal of choledocholithiasis difficult to extract: clinical experience

Objetivo: Describir la experiencia clínica con la técnica de dilatación de la esfinterotomía papilar con balones de gran diámetro en pacientes con coledocolitiasis de difícil extracción. Materiales y métodos: Estudio retrospectivo, diseño descriptivo. Serie de Casos. Se analizaron las historias clínicas de 18 pacientes que fueron sometidos a colangiopancreatografía retrograda endoscópica (CPRE) más dilatación papilar con balón de gran diámetro (DPBGD) por presentar coledocolitiasis de gran tamaño (≥15 mm), desproporción de diámetro entre cálculo y colédoco distal y/o papila yuxtadiverticular. Se emplearon balones dilatadores CRETM entre 12 y 20mm de diámetro. Se consignaron datos como éxito del procedimiento, uso de litotricia; así como complicaciones durante el procedimiento. Resultados: La edad promedio fue 66,1 años. Hubo predominio del género femenino (66,7%). El tamaño promedio de los cálculos en vía biliar fue de 16,7 mm. Las indicaciones de DPBGD fueron: coledocolitiasis gigante (12 pacientes, 66,7%), discordancia entre el diámetro del cálculo y el colédoco distal (6 pacientes, 33,3%). El diámetro de los balones de dilatación más frecuentemente empleados fueron: 15 mm (8 pacientes, 44,4%), 18 mm (5 pacientes, 27,8%), 12 mm (3 pacientes, 16,7%) y 20 mm (2 pacientes, 11,1%). Se consiguió la extracción completa de los cálculos en 15 pacientes (83,3%). Se precisó litotricia en 4 pacientes (22,2%). Hubo 3 pacientes en los que la extracción con balón fue frustra, realizándose manejo quirúrgico. Se reportó 1 caso de pancreatitis aguda leve (5,5%). Conclusiones: Los resultados demuestran que la dilatación con balón es una alternativa segura y eficaz en el manejo de los cálculos en vía biliar de difícil extracción

Objective: The aim of this study was to report the initial experience of the combined use of biliary sphincterotomy plus balloon dilatation of the papilla for management of large stones. Materials and methods: Design: Retrospective, descriptive. This study included 18 patients in whom a hydrostatic dilatation of the papilla with large balloons was performed between June 2012 and April 2014. Patients had multiple large stones, tapered distal common bile duct, previous sphincterotomy, or peri/ intradiverticular papilla. CRE™ dilatation balloons with diameters ranging from 12 to 20 mm were used. Data were recorded as successful procedure, use of lithotripsy and complications during the procedure. Results: The average age was 66.1 years. There was a predominance of the female gender (66.7%). The average size of the bile duct stones was 16.7 mm. The main indications were: giant choledocholithiasis (12 patients, 66.7%) and tapered distal common bile duct (6 patients, 33.3%). The dilatation balloons diameter used were: 15 mm (8 patients, 44.4%), 18 mm (5 patients, 27.8%), 12 mm (3 patients, 16.7%) and 20 mm (2 patients, 11.1%). Complete stone clearance was achieved in 15 patients (83.3%). Lithotripsy was performed in 4 patients (22.2%). There were 3 patients in whom the removal with balloon was unsuccessful, performed surgical management. It was reported 1 case of mild acute pancreatitis (5.5%). Conclusions: The results show that endoscopic papillary large balloon dilation after sphincterotomy is a safe and effective technique for treatment of difficult bile duct stones

[Large balloon dilation for removal of choledocholithiasis difficult to extract: clinical experience]. / Dilatación con balón de gran diámetro en el manejo de coledocolitiasis de difícil extracción: experiencia clínica.

OBJECTIVE: The aim of this study was to report the initial experience of the combined use of biliary sphincterotomy plus balloon dilatation of the papilla for management of large stones. MATERIALS AND METHODS: Design: Retrospective, descriptive. This study included 18 patients in whom a hydrostatic dilatation of the papilla with large balloons was performed between June 2012 and April 2014. Patients had multiple large stones, tapered distal common bile duct, previous sphincterotomy, or peri/ intradiverticular papilla. CRE™ dilatation balloons with diameters ranging from 12 to 20 mm were used. Data were recorded as successful procedure, use of lithotripsy and complications during the procedure. RESULTS: The average age was 66.1 years. There was a predominance of the female gender (66.7%). The average size of the bile duct stones was 16.7 mm. The main indications were: giant choledocholithiasis (12 patients, 66.7%) and tapered distal common bile duct (6 patients, 33.3%). The dilatation balloons diameter used were: 15 mm (8 patients, 44.4%), 18 mm (5 patients, 27.8%), 12 mm (3 patients, 16.7%) and 20 mm (2 patients, 11.1%). Complete stone clearance was achieved in 15 patients (83.3%). Lithotripsy was performed in 4 patients (22.2%). There were 3 patients in whom the removal with balloon was unsuccessful, performed surgical management. It was reported 1 case of mild acute pancreatitis (5.5%). CONCLUSIONS: The results show that endoscopic papillary large balloon dilation after sphincterotomy is a safe and effective technique for treatment of difficult bile duct stones.

[Perception of pain during sigmoidoscopy flexible as an additional diagnostic method for irritable bowel syndrome]. / Percepción del dolor durante la sigmoidoscopia flexible como método diagnóstico adicional de síndrome de intestino irritable.

INTRODUCTION: Visceral hypersensitivity has been proposed as a biological marker of Irritable bowel syndrome (IBS). OBJECTIVE: To evaluate the pain perception during sigmoidoscopy using a visual analog scale of pain in patients with or without IBS, and to assess the pain perception as diagnostic criteria for IBS. We further assessed the sensitivity, specificity and diagnostic efficiency of pain scores to diagnose IBS. METHODS: A prospective case-control study in patients who underwent sigmoidoscopy for the evaluation of gastrointestinal symptoms. All patients completed Rome III criteria questionnaires and divided into two groups: IBS and non-IBS. All participants reported pain scores on visual analog scales after of study. Differences were evaluated. We calculated a receiver-operator characteristic curve (ROC), sensitivity, specificity and diagnostic efficiency. RESULTS: We analyzed 20 patients with IBS and 20 controls. The pain scores were higher in IBS patients compared with non-IBS patients (median, 52.5 vs. 27.5, p = 0.006). The area under the curve was 0.84, at pain score level of ≥ 40 mm with a sensitivity, specificity and diagnostic efficiency of 85%, 75% and 80%, respectively. CONCLUSIONS: The degree of pain perception was higher in IBS patients than in non-IBS patients during sigmoidoscopy. A score of pain perception in ≥ 40 mm may predict the diagnosis of IBS with good sensitivity (85%) and specificity (75%).

Percepción del dolor durante la sigmoidoscopia flexible como método diagnóstico adicional de síndrome de intestino irritable / Perception of pain during the flexible sigmoidoscopy as additional diagnostic method of irritable bowel syndrome

INTRODUCCIÓN: ante la ausencia de medidas objetivas para realizar el diagnóstico de Síndrome de Intestino Irritable (SII) se plantea el uso de la hipersensibilidad visceral como marcador biológico de la enfermedad. OBJETIVO: evaluar la percepción de dolor durante la sigmoidoscopia flexible mediante el uso de una escala analógica visual del dolor en pacientes con SII, además de valorar la percepción del dolor como criterio diagnóstico de ayuda al SII mediante la sensibilidad, especificidad y eficiencia diagnóstica de un valor de corte. METODOLOGÍA: se realizó un estudio prospectivo, tipo casos y controles, en pacientes con indicación para estudio sigmoidoscópico con y sin SII, para valorar la percepción del dolor después del examen mediante el empleo de una escala analógica visual. Se evaluaron las diferencias y se confeccionó una curva ROC, además de establecer la sensibilidad, especificidad y eficiencia diagnóstica. RESULTADOS: Se analizaron 20 pacientes con SII y 20 controles. El score de percepción del dolor fue mayor en los pacientes SII comparados con los pacientes no SII (mediana, 52.5 vs 27.5, p=0.006). El área bajo la curva fue de 0.84, determinándose un punto de corte en ≥ 40mm con una sensibilidad, especificidad y eficiencia diagnóstica de 85%, 75% y 80% respectivamente. CONCLUSIONES: Los pacientes con SII experimentan mayor percepción del dolor durante la sigmoidoscopia. Un valor de percepción del dolor en ≥ 40mm puede predecir el diagnóstico del SII con una buena sensibilidad (85%) y especificidad (75%).

INTRODUCTION: Visceral hypersensitivity has been proposed as a biological marker of Irritable bowel syndrome (IBS). OBJECTIVE: To evaluate the pain perception during sigmoidoscopy using a visual analog scale of pain in patients with or without IBS, and to asess the pain perception as diagnostic criteria for IBS. We further assessed the sensitivity, specificity and diagnostic efficiency of pain scores to diagnose IBS. METHODS: A prospective case-control study in patients who underwent sigmoidoscopy for the evaluation of gastrointestinal symptoms. All patients completed Rome III criteria questionnaries and divided into two groups: IBS and non-IBS. All participants reported pain scores on visual analog scales after of study. Differences were evaluated. We calculated a receiver-operator characteristic curve (ROC), sensitivity, specificity and diagnostic efficiency. RESULTS: We analyzed 20 patients with IBS and 20 controls. The pain scores were higher in IBS patients compared with non-IBS patients (median, 52.5 vs. 27.5, p = 0.006). The area under the curve was 0.84, at pain score level of ≥ 40 mm with a sensivity, specificity and diagnostic efficiency of 85%, 75% ando 80%, respectively. CONCLUSIONS: The degree of pain perception was higher in IBS patients than in non-IBS patients during sigmoidoscopy. A score of pain perception in ≥ 40 mm may predict the diagnosis of IBS with good sensivity (85%) and specificity (75%).