The incidence of incidental pathology found during laparoscopic bariatric surgery has been estimated to be around 2%, and gastric gastrointestinal stromal tumors (GISTs) have been found in 0.8% of patients, constituting a rather uncommon finding. Safe laparoscopic resection of gastric GISTs is an established procedure and has been described associated to gastric Roux-en-Y bypass for morbid obesity. We discuss one case of a gastric GIST incidentally discovered during laparoscopic sleeve gastrectomy for morbid obesity. The procedure was performed via laparoscopy, and the patient recovered without any complication. Currently, the patient has lost weight according to what was expected, is asymptomatic, and free of disease.

(Rev Méd Chile 2009; 137: 1597-601).

RESUMENIntroducción: La incidencia de diverticulitis apendicular es de 0,004% a 2,1% en diferentes series. Reporte de caso: Paciente masculino de 30 años de edad que consulta por un cuadro de 7 días de evolución con dolor abdominal localizado en la fosa ilíaca derecha. Con el diagnóstico de apendicitis aguda es sometido a apendicectomía encontrándose un apéndice inflamado en la punta y cubierto de fibrina. A la histología se observa un divertículo apendicular edematoso e infiltrado por polimorfonucleares y peritonitis periapendicular. La pared del apéndice se encuentra sin signos inflamatorios y el lumen es de diámetro normal. El paciente evoluciona sin complicaciones en el postoperatorio y es dado de alta en buenas condiciones. Discusión: La diverticulitis apendicular se manifiesta con dolor abdominal insidioso que puede preceder hasta en 14 días a la cirugía. Algunos pacientes mencionan episodios de dolor previo similares al actual. La ecografía y la tomografía abdominal son inespecíficas para el diagnóstico, y el tratamiento es el mismo de la apendicitis: la apendicectomía. Debido a que el tratamiento es tardío comparado con la apendicitis aguda, los pacientes que sufren de diverticulitis apendicular tienen una mayor incidencia de complicaciones en el postoperatorio. Nuestro paciente presentó algunas de estas características y cursó un postoperatorio sin complicaciones.PALABRAS CLAVE: Diverticulitis apendicular, apendicitis aguda, apendicitis atípica. SUMMARYThe incidence of appendiceal diverticulitis varies from 0.004% to 2.1% in different series. We report a 30 years old male that consulted for 7 days of abdominal pain located at the right lower quadrant. He was operated with the diagnosis of acute appendicitis. During surgery, a distally inflamed appendix covered with fibrin was observed. Pathology reported an edematous diverticulum infiltrated by polymorphonuclear cells and periappendiceal peritonitis. The appendiceal wall was normal and the appendiceal lumen diameter was preserved. Postoperative evolution was uneventful and the patient was discharged in good conditions. Appendiceal diverticulitis manifest as insidious abdominal pain lasting 1 to 14 days before surgery. Some patients had previous episodes of pain. Abdominal ultrasound and computed tomography are unspecific for the diagnosis of appendiceal diverticulitis and the treatment is just the same as for acute appendicitis: appendectomy.

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