Hepatocellular carcinoma presenting with bone metastasis.

Bone metastasis is an unusual complication of hepatocellular carcinoma. We report here 2 cases of patients with bone metastases of hepatocellular carcinoma at presentation. Patient No. 1 with liver cirrhosis and hepatocellular carcinoma was admitted with a bone metastasis in the rib. The patient was treated with hepatic arterial chemotherapy and rib resection. Patient No.2 was known to have an asymptomatic liver mass of uncertain histology for a year when he presented with back pain. Because of signs of spinal compression, laminectomy was performed, and the diagnosis of metastatic hepatocellular carcinoma was established. The presence of bone metastases in hepatocellular carcinoma at presentation is extremely rare. More frequently, bone lesions are observed after successful treatment of the primary liver tumor. Both surgery and radiotherapy are used as palliative treatment in bone metastases of hepatocellular carcinoma. The treatment of hepatocellular carcinoma presenting with bone metastasis by bone resection and intraarterial chemotherapy seems to be of limited impact on patient survival because of dissemination of micrometastases in other organs and the frequent presence of other comorbid conditions. However, effective palliation using this multimodality approach is feasible. Hepatocellular carcinoma should be considered in the differential diagnosis of bone metastases.