Tags: Disease.
Fibrosarcoma (fibroblastic sarcoma) is a malignant mesenchymal tumour derived from fibrous connective tissue and characterized by the presence of immature proliferating fibroblasts or undifferentiated anaplastic spindle cells in a storiform pattern. It is usually found in males aged 30 to 40 .[citation needed] It originates in fibrous tissues of the bone and invades long or flat bones such as femur tibia and mandible. It also involves periosteum and overlying muscle.
