Pediatric Cystic Abdominal Masses

Case 1 A 15-month old girl presented with frequent vomiting and fever 6 hours before admission. Physical examination revealed no jaundice. There was a palpable mass of cystic consistency at left abdomen. Plain abdomen showed ill-defined mass lesion at mid and left upper abdomen (fig.1) CT was done from other medical center before admission and showed a large well-defined cystic mass clearly separable from the liver and other upper abdominal organs, but it was not possible to predict the pathologic diagnosis. US done after CT showed a cystic mass size 7x11x11 cm medial to the gallbladder (fig.3a) with short communication between the mass and the gallbladder (fig.3b). By US findings, a choledochal cyst was highly suggested. The final diagnosis was a choledochal cyst type I after cystectomy and cholecystectomy.