Abstract
Intrahepatic primary osteosarcoma is a rare disease with a very low incidence but a very poor prognosis. A total of 12 cases have been previously reported, and in most of these cases, intra-focal calcification was observed. This paper aims to report a case of non-calcified intrahepatic primary osteosarcoma. We hereby report a female patient with hepatitis B for 20 years, identified during a routine examination due to a mass in the right lobe of the liver. The patient experienced no significant discomfort, and the serological tumor markers were not elevated. Surgical resection was performed after comprehensive examinations, and postoperative pathology showed primary osteosarcoma of the liver. The patient experienced recurrence and metastasis seven months postoperatively and died eight and a half months postoperatively. Intrahepatic primary osteosarcoma is an extremely rare disease, and it currently requires a combination of clinical, radiological, and pathological findings to make a diagnosis of exclusion. Further, patients may benefit from early diagnosis, aggressive surgery, and post-operative chemotherapy.
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