Mucinous cystic neoplasm of liver in 56-year-old female.Large, well-defined, unilocular cystic mass (asterisk) is located in left lateral section of liver as shown on axial contrast-enhanced CT image. Peripheral curvilinear calcification (arrowhead) is noted, and there is no enhancing solid component. Hepatic segmentectomy was performed, and lesion was confirmed as being mucinous cystic neoplasm (biliary cystadenoma) with dystrophic calcification and containing internal hemorrhage.