Abstract
A 68-year-old man was detected with a hepatic mass during an annual check-up 10 years previously. The tumor, 6 cm in diameter, was monitored following a diagnosis of hemangioma. In July 2011, abdominal ultrasonography showed an increase in the tumor size. Subsequent dynamic computed tomography revealed. The patient was referred to our hospital, and partial resection of segment 6 was performed, owing to suspiction of hepatic malignancies including intraductal papillary neoplasms of the bile duct and carcinoma. The tumor originated from the liver parenchyma, and it was clearly demarcated by a fibrous capsule. The mass consisted of cystic and bleeding spongiform components containing a necrotic red-brown juice. No neoplasms or epithelial cells in the cystic components were observed pathologically, and the mass contained mostly necrotic fibrous tissue with old hemorrhage. Finally, we diagnosed a chronic expanding hematoma originating from the liver.
