The authors report on an infant who had a multiloculated cystic lesion loca
ted in segment IV of the liver, consistent with Caroli's disease diagnosed,
by routine prenatal ultrasound at 25 weeks' gestation, and confirmed by he
patobiliary HIDA scan and computed tomography soon after birth. Because the
re was no sign of biliary obstruction, the patient: was observed initially,
with gradual regression of the cysts noted by serial sonograms. Caroli's d
isease in older children and adults often is associated with recurrent chol
angitis and cirrhosis, mandating resection when the disease is unilobar. Ho
wever, the natural history of Caroli's disease diagnosed in utero is unclea
r, and a period of observation appears warranted in the asymptomatic patien
t. J Pediatr Surg 35:1390-1393. Copyright (C) 2000 by W.B. Saunders Company
.