A 34-year-old female presented with right hypochondrial pain of 6 months following an uneventful open cholecystectomy about 5 years ago. A firm intra abdominal lump was felt in the right hypochondrium. Ultrasonography and computed tomography of the abdomen showed a large cystic lesion in relation to the porta hepatis. On exploration, a large cystic mass was found in relation to the undersurface of liver, adherent to the colon and duodenum. The cyst was excised leaving a cuff of cyst wall,

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... y adherent to the duodenum. A small opening with bile trickling through it was noted in the region of the confluence of hepatic ducts. Choledochotomy was done and T-tube placed. The bilious output from the sub-hepatic drain gradually decreased and the repeat T-tube cholangiogram on 14 th day following surgery was normal. The patient, at one year of follow-up is asymptomatic with normal liver function tests.