Cystic Malformation of Cystic Duct: A Study of 10 Cases with Review of the Literature

Aim: The purpose of this test is to look for cystic malformations in the cystic duct.

Methods: Over the course of two years, we discovered ten cases of cystic malformation of the cystic duct in patients who had their abdominal complaints evaluated in our radiology department with ultrasonography, multidetector computed tomography, or magnetic resonance imaging. Radiological diagnosis of cystic malformation of the cystic duct was done on the basis of a dilated, nonvascular cystic structure near the porta hepatis, and visualization of a clear communication with either the gallbladder, normal caliber cystic duct and/or common bile duct (CBD) on at least one imaging modality.

Results: The cystic duct had saccular dilatation in four of ten cases.Six of the patients showed fusiform dilatation of the cystic duct, with two of them having just mild fusiform dilatation.Two of the patients exhibited CBD dilatation, whereas the third had cystic duct calculi and malignancy. Conclusion: The cystic duct malformations should be recognised as a different type of choledochal cyst and included to Todani's classification as type VI cyst.