[Two Cases of Cholangiolocellular Carcinoma with Difficult Preoperative Diagnosis].

Cholangiocellular carcinoma(CoCC)is a rare form of primary liver cancer. We report 2 cases of cholangiocellular carcinoma(CoCC). Case 1: 66-year-old male. He was initially diagnosed as a suspected hepatic hemangioma and followed up, but 5 months later, contrast-enhanced MRI showed an increasing trend, and he was diagnosed as intrahepatic cholangiocarcinoma and underwent surgery. Case 2: 73-year-old female. She was suspected to have hepatic hemangioma. Eight months later, contrast-enhanced MRI showed an enlargement of 20 mm in size, which led to suspicion of hepatocellular carcinoma or intrahepatic cholangiocarcinoma, and surgery was performed. The pathological diagnosis of both patients was CoCC.