[Prevalence of periampullary diverticular, its association with choledocolithiasis and technical sucess with ERCP].

Background: Periampullary diverticula (DP) are thought to be associated with bile duct stones; they may influence the index of success or failure at endoscopic retrograde cholangiopancreatography (CPE) and may increase the risk of its complications.

Aim: Assess the association between DP with bile duct stones and its contribution with the technical success at CPE.

Methods: Two hundred and forty five consecutive patients who were undergoing CPE between April 1st and September 23th were prospectively entered into a database.

[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.