ABSTRACT
Introduction: Choledochal cyst is a type congenital anomaly in which there is dilatation of the intra or extrahepatic biliary tree. Choledochal cysts are classified into five types based on location or shape of the cysts. Materials and methods: A prospective analytical study was conducted from January 2015 to June 2017 at Madras Medical College, Chennai, India. All patients who underwent ERCP and had finding of choledochal cyst on cholangiogram were included in the study. Patients were assessed on their demographic data, clinical findings, presentation, and complications. Results: The incidence of symptomatic choledochal cyst was 2.5%. Type 1C was the most common type of choledochal cyst with obstructive jaundice due to large CBD stones as the most common presentation in this study. None had 30 day post-operative mortality. Conclusion: Type IC is the most common type among symptomatic choledochal cyst in south India. As it is a premalignant condition management includes endoscopic retrograde cholangiography followed by surgery with good clinical outcome.