Cystic tumours of the pancreas--the importance of correct diagnosis and treatment.

Cystic tumours of the pancreas are relatively rare and are frequently misdiagnosed as pancreatic pseudocysts. The three cases described below demonstrate some of the typical presenting features of these lesions and emphasise the importance of correct diagnosis and treatment. CASE REPORTS Case 1 A 35 year old previously healthy woman presented with left subcostal pain. Ultrasound revealed a 10 cm cystic mass of the pancreas. This was confirmed by CT scan. CT-guided aspiration revealed a high amylase content. ERCP revealed normal pancreatic and bile ducts. The lesion was thought to be a pseudocyst and endoscopic drainage with stent insertion was performed. However, the lesion persisted. Surgical drainage