The aim of the study was to evaluate the prevalence of periampullary diverticula in the studied population and To compare the success rate of cannulation in  patient with and  without Periampullary diverticulam. The reported prevalence of periampullary duodenal diverticula varies between 9 and 30%.

Material and methods.

       The study group of  400 patients who underwent ERCP between 2015 and 2017 at institute of medical gastroenterology, Madras medical college were analysed. The group comprised of 170 women (mean age 60 years) and 230 men (mean age 55 years). The patients were divided into two groups. Group A included patients in whom there were no periampullary diverticula detected. Group B included patients in whom the periampullary diverticulam were identified.  

Results.

     There were 340  patients included in group A  and  60 patients in group B. The prevalence of periampullary diverticula in the analysed group was 15%.  The presence of stones or biliary sludge was diagnosed in 270 in group A and 45 patients  in group B second most common indication for ERCP in our study group is Periampullary carcinoma,   40 patients in group A,  5 patients in group B. Success rate of cannulation in Group A 86.5% and Group B 65%.

Conclusions.

    Overall prevalence of periampullary diverticulam is 10% in our studied population,  the technical success of ERCP is high in people without periampullary diverticulam.