Aim of the study was analysis of methods of surgical treatment of patients with bile duct cysts.Material and methods. Retrospective analysis of data from 30 patients who underwent surgical treatment for bile duct cysts in Clinic of General, Transplantation and Liver Surgery, Warsaw Medical University, between 1 October 2001 and 31 December 2009.Results. Bile duct cysts are more common in females; female to male ration is 4:1. Most of the treated patients had bile duct cysts belonging to type I according to Todani classification - 13 patients (43.3%). Six patients (20%) had type IV cysts, 8 patients (26.7%) had type V cysts according to Todani classification. Three patients (10%) with isolated intrahepatic bile duct cysts were not classified to any group according to Todani classification. The most common type of surgical treatment was complete resection of intrahepatic bile duct with choledocho-intestinal Roux-en-Y anastomosis that was performed in 17 patients (56.7%). The other patients generally underwent various types of resections of the liver and bile ducts or only of the liver. Five patients (16.7%) required liver transplantation. Nine patients (30%) developed complications. One patient (3.3%) who underwent liver transplantation and retransplantation, died from progressive multiorgan failure and renal failure.Conclusions. First line treatment of patients with bile duct cysts involves their resection, sometimes with requirement of resection of liver parenchyma. Most of these patients underwent reconstruction of bile duct through choledocho-intestinal Roux-en-Y anastomosis. Some patients undergo liver transplantation. Surgical treatment of patients with bile duct cysts is demanding from the technical point of view and should be undertaken in centers that specialize in hepatobiliary surgery.