Fig. 2. Imaging features of Mirizzi syndrome. (A) Computed tomography showing a large calculus in a dilated cystic duct (15 mm) causing compression over the proximal common bile duct (CBD) and common hepatic duct (CHD) with resultant upstream dilatation of the right and left hepatic ducts and intrahepatic biliary radicle dilatation (arrow). (B) MRI/MRCP showing a tortuous and thickened cystic duct with constellation of stones at its distal end (enclosed within the oval) causing extraluminal compression of the distal CHD (arrow). (C) Cholangiogram showing a large cystic duct compressing the CHD and proximal CBD, causing upstream CHD dilatation (arrow). MRI, magnetic resonance imaging; MRCP, magnetic resonance cholangiopancreatography.
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