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Choledochal cyst is a congenital disease of the biliary tract with extrahepatic and/or intrahepatic biliary tree dilatation. There is a female majority (4:1). Controlling biliary sepsis and curing pancreatitis are prerequisites of surgery. Here, a 35-year-old female patient, came with complaints of epigastric and right upper abdominal pain for three days. On examination per abdomen was soft, non distended, right hypochondriac tenderness was present, no guarding, bowel sounds were audible. Magnetic Resonance Cholangiopancreatography (MRCP) was done which showed fusiform dilatation of Common Bile Duct (CBD), Common Hepatic Duct (CHD), right and left hepatic duct, along with mild dilatation of central intrahepatic biliary radicals (4.8-5 mm)- suggestive of choledochal cyst type IVA. Hepatico-duodenostomy was done. The entire extrahepatic biliary tree should be removed when the choledochal cyst is diagnosed whether or not symptoms are present. Despite being congenital, the condition is typically discovered in adulthood as well. The treatment of choledochal cysts has evolved. The current standard of care is cyst excision and hepaticojejunostomy. [ABSTRACT FROM AUTHOR]