RESUMO Racional: A cirurgia laparoscópica tem sido gradualmente aceita como opção para o tratamento cirúrgico do câncer gástrico. Ainda existem pontos controversos ou situações eventualmente associadas a dificuldades intra-operatórias ou complicações pós-operatórias. Objetivo: Estabelecer a relação entre as dificuldades durante a execução da gastrectomia total e a ocorrência de eventuais complicações pós-operatórias. Método: Foram revisados os protocolos operatórios e a evolução pós-operatória de 74 pacientes operados por câncer gástrico, submetidos à gastrectomia total laparoscópica (critérios de inclusão). Foram analisadas as dificuldades intraoperatórias registradas no protocolo operatório e as complicações pós-operatórias de natureza cirúrgica (critérios de inclusão). As complicações médicas pós-operatórias foram excluídas (critérios de exclusão). Para a discussão, foi realizada extensa revisão bibliográfica. Resultados: Dificuldades ou complicações intraoperatórias relatadas corresponderam a 33/74 e destas 18 (54,5%) foram relacionadas com complicações pós-operatórias e seis absolutamente inesperadas. As mais frequentes foram vazamentos da anastomose e do coto duodenal; no entretanto, outras complicações raras foram observadas. Sete foram tratados com medidas conservadoras e 17 (22,9%) necessitaram de re-exploração cirúrgica, com mortalidade pós-operatória de dois pacientes (2,7%). Conclusão: Aprendemos que existem complicações infrequentes e inesperadas; a equipe de tratamento deve estar atenta e diante da suspeita de complicação, decisão apropriada pode incluir uma nova exploração precoce. Finalmente, após a experiência relatada, algumas complicações devem ser evitadas.

ABSTRACT Background: Laparoscopic surgery has been gradually accepted as an option for the surgical treatment ofgastric cancer. There are still points that are controversial or situations that are eventually associated with intra-operative difficulties or postoperative complications. Aim: To establish the relationship between the difficulties during the execution of total gastrectomy and the occurrence of eventual postoperative complications. Method: The operative protocols and postoperative evolution of 74 patients operated for gastriccancer, who were subjected to laparoscopic total gastrectomy (inclusion criteria) were reviewed. The intraoperative difficulties recorded in the operative protocol and postoperative complications of a surgical nature wereanalyzed (inclusion criteria). Postoperative medical complications were excluded (exclusion criteria). For the discussion, an extensive bibliographical review was carried out. Results: Intra-operative difficulties or complications reported correspond to 33/74 and of these; 18 events (54.5%) were related to postoperative complications and six were absolutely unexpected. The more frequent were leaks of the anastomosis and leaks of the duodenal stump; however, other rare complications were observed. Seven were managed with conservative measures and 17 (22.9%) required surgical re-exploration, with a postoperative mortality of two patients (2.7%). Conclusion: We have learned that there are infrequent and unexpected complications; the treating team must be mindful of and, in front of suspicion of complications, anappropriate decision must be done which includes early re-exploration. Finally, after the experience reported, some complications should be avoided.

Abstract Introduction: In patients with long Barrett esophagus we have suggested to perform fundoplication with antrectomy, vagotomy and Roux-en-Y duodenal diversion however it could be associated with complications and side effects. Objective: The objective of this study is to compare open versus laparoscopic surgery for early and early postoperative complications, mortality and distant outcomes. Material and method: We compare 2 cohorts of patients, 73 patients with open surgery and 53 patients, who underwent laparoscopic surgery using the same technique. Only patients with Long Barrett were included. They are clinically monitored in the early and late postoperative period, with endoscopy and histology at long term follow-up (3-5 years). The results were evaluated in terms of early and late complications, the quality of life and patient satisfaction were analyzed. For the analysis we used t-student considering a P < .05 as significant. Results: As for early complications, there were no significant differences in both groups. There was no postoperative mortality. In the late complications, the total complications are not significantly different between the two groups (only their causes and characteristics changed) neither in terms of Visick's classification and the quality of life score Conclusion: The fundoplication, with laparoscopic acid suppression and duodenal diversion, presents similar short-term and long-term results than open surgery, with the benefits of a mini-invasive procedure.

Resumen Introducción: En pacientes con esófago de Barrett largo hemos sugerido efectuar fundoplicatura con antrectomía, vagotomía y derivación duodenal en Y de Roux que podría asociarse con complicaciones y efectos colaterales. Objetivo: El objetivo de este estudio es comparar la cirugía por vía abierta vs laparoscópica en cuanto a complicaciones postoperatorias precoces y alejadas, mortalidad y resultados alejados. Material y método: Se comparan 2 cohortes de pacientes, 73 pacientes con cirugía abierta y 53 pacientes operados con la misma técnica por vía laparoscópica por el mismo equipo. Solo se incluyeron los pacientes con Barret largo. Se controlan clínicamente en el postoperatorio inmediato y alejado, con endoscopia e histología anual, y se evalúan los resultados en cuanto a complicaciones precoces, alejadas y se analiza la calidad de vida y la satisfacción del paciente. Para el análisis se utilizó «t» de Student considerando un valor de p < 0,05 como significativo. Resultados: En cuanto a complicaciones precoces en ambos grupos no hubo diferencias significativas. No hubo mortalidad postoperatoria. En las complicaciones tardías las complicaciones totales no son significativamente diferentes entre ambos grupos (solo cambian sus causas y características) ni en cuanto a la clasificación de Visick y el puntaje de calidad de vida. Conclusión: La fundoplicatura con procedimiento de supresión ácida y derivación biliar por vía laparoscópica presenta similares resultados a corto y largo plazo que la cirugía abierta, pero con los beneficios de una cirugía mínimamente invasiva.

RESUMO Racional: A cirurgia bariátrica no Chile tem visto aumento exponencial nos últimos anos, especialmente na gastrectomia vertical. Atualmente, o seu uso é discutido em pacientes que sofrem de refluxo gastroesofágico. Diferentes opções foram consideradas para o gerenciamento desses pacientes, mas até agora o bypass gástrico em Y-de-Roux laparoscópico parece ser a melhor opção. A gastrectomia vertical mais fundoplicatura concomitante ou o reparo da hérnia hiatal também foi sugerido em pacientes com refluxo ou hérnia hiatal pequena. Objetivo: Apresentar uma coorte de pacientes obesos com refluxo gatroesofágico submetidos a esse procedimento, que busca proporcionar os benefícios da gastrectomia vertical laparoscópica (LSG) e da operação antirrefluxo focada na avaliação da presença de refluxo e IMC após a operação, e comparar a o resultado observado nesta coorte com um grupo anterior de pacientes obesos sem refluxo submetido somente à gastrectomia vertical. Métodos: Série de casos retrospectivos em 15 pacientes submetidos à essa operação entre os anos de 2003 e 2012. Os registros clínicos foram analisados e os valores de monitoramento de pH 24 h, manometria esofágica e desfecho clínico foram registrados. Os resultados foram comparados com uma série anterior de pacientes submetidos à LSG. Não foram feitas análises estatísticas. Resultados: O grupo A consistiu em 15 pacientes submetidos a LSG mais fundoplicatura e 93% (n=14) eram mulheres. A idade média foi de 46,2 anos. O índice de massa corporal pré-operatório médio (IMC) foi de 33,9. Todos os pacientes apresentaram monitoração de pH e manometria pré-operatória alteradas. Houve uma complicação menor correspondente a um seroma. Não houve mortalidade perioperatória. O grupo B consistiu de 23 pacientes obesos submetidos à LSG. Esses pacientes desenvolveram refluxo de novo, LES hipotensos e esofagite após a operação. Os pacientes do grupo A apresentaram melhora no monitoramento e manometria do pH esofágico aos três meses. Durante o seguimento em longo prazo, seis foram submetidos à operação revisional, quatro por recuperação de peso, um por peso recuperado associado a refluxo sintomático e um submetido à reintervenção por refluxo. Conclusões: Bons resultados são observados no seguimento em curto prazo na resolução de refluxo e perda de peso. No entanto, os resultados em longo prazo são desencorajadores, pois 53,3% dos pacientes necessitaram de operação revisional durante o acompanhamento.

ABSTRACT Background: Bariatric surgery in Chile has seen an exponential increase in recent years, especially in sleeve gastrectomy. Its use is currently discussed in patients suffering from gastroesophageal reflux disease. Different options have been considered for the management of these patients but up to now laparoscopic Roux-en-Y gastric bypass seems to be the best option. Sleeve gastrectomy plus concomitant fundoplication or hiatal hernia repair also has been suggested in patients having reflux or small hiatal hernia. Aim: To present a cohort of obese patients with gatroesophageal reflux undergoing this procedure, which seeks to provide the benefits of both laparoscopic gastric sleeve (LSG) and antireflux surgery focused on the evaluation of presence of reflux and BMI after surgery, and to compare the result observed in this cohort with a previous group of obese patients without reflux submitted to sleeve gastrectomy alone. Methods: Retrospective case series in 15 patients who underwent this surgery between the years 2003 and 2012. Clinical records were analyzed and values of 24 hr pH monitoring, esophageal manometry and clinical outcome were recorded. Results were compared to a previous series of patients who underwent LSG. No statistical analyses were made. Results: Group A consisted of 15 patients submitted to LSG plus fundoplication. 93% (n=14) were female. Mean age was 46.2 years. Mean preoperative body mass index (BMI) was 33.9. All patients had altered pH monitoring and manometry preoperatively. There was one minor complication corresponding to a seroma. There was no perioperative mortality. Group B consisted of 23 obese patients who underwent LSG. These patients developed de novo reflux, hypotensive LES and esophagitis after the surgery. Group A patients showed improvement in esophageal pH monitoring and manometry at three months. During long-term follow-up, six underwent revision surgery, four for weight regain, one regained weight associated with symptomatic reflux, and one underwent re-intervention for reflux. Conclusions: Good results are observed in the short-term follow up in both reflux resolution and weight loss. Nevertheless, results at long term are discouraging, with 53.3% of the patients requiring revision surgery during follow-up.

Introduction: Chile is known for being one of the countries with higher prevalence of gallstone disease in the world. Among the risk factors for biliary pathology are female gender, age, overweight and obesity. These factors associated with rapid weight loss are characteristic of obese patients undergoing bariatric surgery. It has been reported that patients undergoing these surgeries have a high incidence of cholelithiasis to 12 months postoperatively. Objectives: To determine the prevalence of gallstone disease in obese patients undergoing bariatric surgery, and analyze the occurrence of this disease during the postoperative follow-up up to 12 months. Material and methods: Retrospective case series including 221 patients undergoing bariatric surgery, with follow-up up to 12 months. Review of clinical records and abdominal ultrasound was conducted. Results: A 18.09% of patients had a history of previous cholecystectomy. A 13.57% of patients had preoperative cholelithiasis and a concomitant cholecystectomy was performed in all of them. Follow up was conducted in 151 patients. In ultrasound examinations at one year, 3.54% had cholelithiasis. Conclusions: There is a high prevalence of cholelithiasis in the population undergoing bariatric surgery. The emergence of this disease in the first year was lower than that reported in the literature. Patients should be closely monitored for the detection of this disease during the first postoperative year.

Introducción: Chile se caracteriza por ser uno de los países con mayor prevalencia de patología biliar en el mundo. Dentro de los factores de riesgo de la patología biliar se encuentran el sexo femenino, la edad, el sobrepeso y la obesidad. Estos factores asociados a la disminución rápida de peso son característicos de los pacientes obesos sometidos a cirugía bariátrica. Se ha reportado que los pacientes sometidos a esta cirugía tienen una alta incidencia de colelitiasis a 12 meses postoperatorio. Objetivos: Determinar la prevalencia de patología biliar en pacientes obesos sometidos a cirugía bariátrica, y analizar la aparición de esta patología durante el seguimiento postoperatorio a un año. Material y método: Serie de casos retrospectiva, incluyendo 221 pacientes sometidos a cirugía bariátrica, con seguimiento a 12 meses. Se realizó revisión de registros clínicos, consignando peso y ecografía abdominal en el control al año. Resultados: Un 18,09% de los pacientes tenía antecedentes de colecistectomía previa. Un 13,57% de los pacientes presentaba colelitiasis en el preoperatorio y se realizó colecistectomía de forma concomitante en todos ellos. Se realizó seguimiento a un año en 151 pacientes. En las ecografías al año, un 3,54% presentaba colelitiasis. Conclusiones: Existe una elevada prevalencia de colelitiasis en la población sometida a cirugía bariátrica. La aparición de esta patología en el primer año fue menor a la reportada en la literatura. Se debe considerar un seguimiento cercano para la detección de esta patología durante el primer año postoperatorio.