Acute pancreatitis with a mucinous cystoadenoma of the pancreas in pregnancy.

Pregnancy complicated by pancreatitis is a rare and difficultly managed clinical situation. Gallstones are the most frequent cause of pancreatitis in pregnancy. Non-gallstone pancreatitis in pregnancy has been shown to be significantly more prone to premature delivery and pseudocyst formation. Cystic lesions as a cause of pancreatitis in pregnancy have not, to our knowledge, been observed. Pancreatic cystic lesions in general are rare, but are difficult to treat given problems in clarifying their malignancy. Mucinous cystic neoplasms are considered premalignant lesions and resection is recommended. Receptors for estrogen and progesterone receptors in these cysts may cause cystic growth during pregnancy. Treatment recommendations for pancreatitis in pregnancy are not well defined; this applies as well to treatment protocols for cystic lesions. In this case report we describe a new potential cause of acute pancreatitis in pregnancy due to compression of the principal pancreatic duct by a mucinous cystoadenoma.