Association of Periampu llary Diverticul a with Primary Choledocholithiasis

Lee, Jun Hong; Lee, Jae Seung; Kim, Hyong Wook; Bae, Sang Moon; Kim, Sang Hyun; Kang, Dae Hwan; Song, Chul Soo; Song, Geun Am; Cho, Mong; Yang, Ung Suk

Abstract

BACKGROUND/AIMS: The association between periampullary diverticula and biliary calculi has been reported, but the results are different according to the anatomical location of the stones. The aim o this study was to investigate the association between periampullary diverticula and the incidence of gallstones according to the location of gallstones and the type of diverticula.
METHODS
For the seven hundred ninety five cases, the results of endoscopic retrograde cholangiopancreatography (ERCP) were analysed. The gallstones were classified into choledocholithiasis, cholecystolithiasis and combined case according to their locations. Incidence of gallstones was determined according to the type o periampullary diverticula.
RESULTS
The prevalance of biliary calculi was higher in patients with periampullary diverticula than in patients without it (p<0.001). Considering the locations of gallstones choledocholithiasis was observed in 49.2% of patients with periampullary diverticula and in 28.0% of patients without it (p<0.003). There was no statistical correlation between the type of periampul lary diverticula and the incidence of gallstones (p>0.05).
CONCLUSIONS
This study shows that there is a significant association between periampullary diverticula and primary choledocholithiasis and no correlation between the type of periampullary diverticula and the incidence of gallstones.