[Open acess to endoscopy in a tertiary referal center].

Objective: The purpose of this study was to determine the yield of open access endoscopy in a third level Mexican hospital.

Background Data: Open access endoscopy is common in United States of America and Europe (endoscopy is performed without prior specialist consultation). In Mexico this system hasn't become popular yet.

[Appropriate use of diagnostic esophagogastroduodenoscopy and its relation with positive results].

Introduction: Upper gastrointestinal endoscopy is a sensitive and safe procedure, but expensive and with certain risks. The range of inappropriate use of upper gastrointestinal endoscopy in open access system is between 5.6 to 61.

[Intragastric migration of a plastic prosthesis placed for repair of a diaphragmatic perforation. Case report].

Case: We report the case of a 21-year old female with multiple surgeries. Her problem began after last surgery, which got complicated by a diaphragmatic perforation on the left side so it was necessary to repair the defect with a plastic prosthesis, since that time she complained of abdominal pain. In an abdominal computed axial tomography prosthesis was observed and by endoscopy its presence into stomach was confirmed, because its size and rigidity its endoscopic extraction was impossible, so it was surgically extracted.

[Association between symptomatic gastroesophageal reflux and Barrett's esophagus].

Background Data: Barrett esophagus is a proximal displacement of the squamocolumnar junction relative to the gastroesophageal junction with intestinal metaplasia, it has been linked to gastroesophageal reflux disease. However, it has been observed in individuals without gastroesophageal reflux symptoms, with prevalence up to 25% in 50 years older men.

Objective: Assess the association between symptomatic gastroesophageal reflux and Barrett's esophagus.