Obstructive Gastric Pseudotumor Caused by Cytomegalovirus in an AIDS Patient: A Case Report and Review of Surgical Treatment.

Background: Cytomegalovirus (CMV) is a common opportunistic pathogen in patients with HIV. It is also a major cause of gastrointestinal ulcers in patients with acquired immunodeficiency syndrome (AIDS). CMV pseudotumor in the stomach is a rare cause of digestive tract obstruction.

Influence of Insulin Resistance Status on the Development of Gallstones Following Roux-En-Y Gastric Bypass: a Prospective Cohort Study.

Background: The occurrence of gallstones following Roux-en-Y gastric bypass (RYGB) has been extensively reported. As RYGB promotes improvement in insulin resistance (IR), which is one of the factors enrolled in the pathophysiology of gallstones, this study aims to determine the influence of IR and its post-RYGB course on the development of gallstones.

Methods: This is a prospective cohort study that enrolled 108 morbidly obese subjects free of gallstones which underwent RYGB and were followed up for 24 months, through clinical, laboratory, and ultrasound examinations.

Megaduodenum associated with gastric strongyloidiasis.

Gastric strongyloidiasis and megaduodenum are rare diseases. Gastrointestinal (GI) strongyloidiasis has many clinical features. One of them is megaduodenum.

Laparoscopic antireflux surgery in patients with extra esophageal symptoms related to asthma.

Background: Asthma, laryngitis and chronic cough are atypical symptoms of the gastroesophageal reflux disease.

Aim: To analyze the efficacy of laparoscopic surgery in the remission of extra-esophageal symptoms in patients with gastroesophageal reflux, related to asthma.

Methods: Were reviewed the medical records of 400 patients with gastroesophageal reflux disease submitted to laparoscopic Nissen fundoplication from 1994 to 2006, and identified 30 patients with extra-esophageal symptoms related to asthma.

The use of mitomycin C in caustic esophagitis in rats.

Purpose: To evaluate the topical effects of mitomycin C (MMC) in rats, with or without esophageal dilation, in different moments after esophageal caustic injury with NaOH10%.

Methods: Forty eight Wistar rats were divided into six groups: "GS" infusion of 0.9% saline solution in the esophagus; "CG" infusion of 0.