Isolated hydatid cyst of the pancreas masquerading as pancreatic pseudocyst.

Hydatid cyst of the pancreas is very rare and usually presents with obstructive jaundice. We report a case of a 7-year-old girl with cyst of the pancreas without any obstructive jaundice. The child was treated surgically and hydatid cyst of pancreas was found. Partial pericystectomy was performed. After 1 month on follow-up, the child developed pseudocyst of pancreas, which needed cystogastrostomy. Postoperatively, the child improved and is remaining well after 3 months of follow-up. Hydatid cysts of pancreas are very difficult to diagnose preoperatively and should be kept as a differential diagnosis of cystic intrapancreatic lesions. Serological tests can help in early diagnosis.