benign tumor made up of muscle tissue is known as
A muscle tumor is a myoma. Smooth muscle-benign = Leiomyoma, malignant = Leiomyosarcoma Skeletal muscle-benign = Rhabdomyoma, malignant = Rhabdomyosarcoma   Myoma A t â¦ umor that originates from muscle tissue is called a myoma (bening) or myosarcoma (malignant). myocytoma.eiomyoma. The root word of or relating to muscle is my(o), and oma is the suffix for tumor. Therefore, Myoma is a Muscle Tumor. The prefix rhabd(o) means striated or rod shaped, my(o) is the root word of or relating to muscle, and oma is the suffix for tumor.