Giant adrenal cyst in the newborn: perinatal diagnosis and management.

Routine ultrasound examination in a pregnant 20-year-old woman at 32 weeks demonstrated a cystic structure in the fetal abdomen. Follow-up till term showed no substantial change in size. After birth the cyst could easily be palpated as an epigastric mass. Ultrasonography followed by a barium meal suggested, among other things, the diagnosis of gastric duplication. At exploratory laparotomy the cyst proved to be of adrenal origin. The diagnosis and therapeutic options are discussed.