Fibrosarcoma

Epidemiology

This tumor was formerly considered the most common soft tissue sarcoma. However, with better definition of tumors such as fibromatosis and malignant fibrous histiocytoma (which were previously lumped together with fibrosarcoma), fibrosarcoma now accounts for only 5 to 10% of all sarcomas. This tumor may be seen in all ages, but most of them occur in adults between 40 and 70 years of age. In children, most tumors are diagnosed in the first year. Males account for 60% of cases. These tumors tend to occur in the lower extremities, whereas head and neck lesions account for up to 20% of cases.

Clinical Findings

Patients usually present with a history of a slow-growing mass ranging from months to several years. The lesion is usually superficially located and feels firm or hard.