myosarcoma

Myosarcoma is a type of sarcoma, which is a tumor originating from connective tissue derived from mesodermal cells. Sarcomas are distinguished from carcinomas, which arise from epithelial tissues. Myosarcomas specifically develop from muscle tissue.1

Sarcomas are relatively rare in adults but are more common in children. They are generally categorized into bone and soft-tissue tumors. Myosarcomas fall under the soft-tissue category and can have characteristics of mature tissues like muscle. A specific type of malignant muscle tumor is a rhabdomyosarcoma, which arises in skeletal muscles and is often found in the leg or arm. Another type, fibrosarcoma, is a rare malignant tumor of fibrous tissue.1234