A large, cystic mass was noted in the cranial abdomen in this patient and measured 5.32 x 3.49 cm. It appears to be deriving from the left liver with micro and macrocystic changes. This is most consistent with cystadenoma or potential biliary adenocarcinoma. It appears resectable with full left sided lobectomy as plenty of adequate liver appeared present. The portal vein was impinged upon by the mass; however, the vena cava did not appear to be affected. The gallbladder was not visualized. Further intercostal approaches to the portal hilus would be ideal in this case.