Antenatal detection of a congenital pancreatic cyst.

Congenital pancreatic cyst is very rare. Antenatal detection can potentially decrease the neonatal morbidity because the appropriate preparation can be made in advance of delivery. We report a case of congenital pancreatic cyst detected prenatally by routine obstetric sonography in a fetus at 33 weeks' gestation. The cyst, located at the pancreatic tail, was excised at the age of 10 days. Pathology results confirmed a pancreatic cyst. Differential diagnosis of cystic abdominal lesions occurring in utero should include congenital pancreatic cyst.