Choledochal cysts.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003135:Common Bile Duct / Q000002:abnormalities*; D003560:Cysts / Q000151:congenital*; D004108:Dilatation, Pathologic; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged