Abstract
A 77-year-old woman had become aware of left abdominal distention. She was referred to hospital due to abdominal pain of the left upper quadrant after an episode of trauma. Abdominal CT scan revealed a large cystic tumor, 17 cm in diameter, in the upper abdomen and massive ascites. During the 6-month follow-up period, the size of the tumor increased, and she was admitted to our hospital. ERCP showed no communicating branch between the cystic lesion and the main pancreatic duct. Because the size of the tumor did not change after continuous percutaneous cyst drainage, of 15.5 L, she required a distal pancreatectomy, a splenectomy, a left nephrectomy, a partial transverse colectomy, and a partial left adrenalectomy. On pathology, it was found that the trauma had caused the rupture of a pancreatic mucinous cystadenoma (MCA). We report this rare case of ruptured MCA caused by trauma.