The choledochal cysts, which refer to the cystic dilatation of the biliary duct, are
rare lesions generally seen in children. Choledochal cyst of the cystic duct is an
uncommon entity. Often, it is associated with the choledochal cyst of the rest of
the biliary tree. Isolated cystic duct choledochal cyst is quite rare. Most of these
lesions have been recognized only on surgery. Modern cross-sectional imaging methods
have facilitated preoperative recognition and characterization of cystic duct cyst
enabling formulation of appropriate management strategy. We report the imaging findings
in three cases of choledochal cyst involving the cystic duct. All these cases were
correctly diagnosed preoperatively. A review of cases reported in the literature and
the role of imaging in guiding the management are also presented.
Keywords
Choledochal cyst - computed tomography - cystic duct cyst - magnetic resonance cholangiopancreatography
