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  • Title: ERCP in patients with periampullary diverticulum.
    Author: Rajnakova A, Goh PM, Ngoi SS, Lim SG.
    Journal: Hepatogastroenterology; 2003; 50(51):625-8. PubMed ID: 12828047.
    Abstract:
    BACKGROUND/AIMS: Duodenal diverticula, discovered incidentally in patients during endoscopic retrograde cholangiopancreatography, are usually asymptomatic, but can be the source of significant morbidity. The aim of this study was to evaluate the indications for endoscopic retrograde cholangiopancreatography, the course of this procedure and complications after this procedure in patients with periampullary diverticulum. METHODOLOGY: Clinical, laboratory, ultrasonographic, and endoscopic retrograde cholangiopancreatography data of 626 patients from a single endoscopy center were retrospectively analyzed. RESULTS: The periampullary diverticulum was identified in 72 patients (11.5%). The difficulty in cannulation of papilla of Vater was encountered in 57 patients (79.2%) with diverticulum compared to 54 patients (9.7%) without diverticulum (P < 0.001). Cannulation of common bile duct was successful in 592 patients (94.6%). Cannulation of common bile duct failed in 8 patients (11.1%) with diverticulum compared to 26 patients (4.7%) without diverticulum (P = 0.046). Patients without diverticulum (n = 168, 31.9%) had two-times more often dilated common bile duct > or = 6 mm without stone on ultrasound compared to patients with diverticulum (n = 12, 17.6%) (P = 0.017). Patients with diverticulum presented 1.8-times more often with retained stone in the common bile duct than patients without diverticulum (16.7% vs. 9.7%). 17.3% of patients developed post-endoscopic retrograde cholangiopancreatography complications, which did not significantly differ in both groups. However, the patients who presented with retained common bile duct stones had higher post-endoscopic retrograde cholangiopancreatography complications (P = 0.011). CONCLUSIONS: Cannulation of the common bile duct is more difficult in patients with periampullary diverticulum and requires more skills. Periampullary diverticulum is also associated with higher risk of retained stones in the common bile duct which may lead to higher post-endoscopic retrograde cholangiopancreatography complication rate.
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