NCIt synonyms : Malignant Tumor of the Muscle; Malignant Tumor of Muscle; Malignant Neoplasm of Muscle; Myosarcoma; Malignant Muscle Tumor; Malignant Neoplasm of the Muscle;
NCIt definition : A malignant neoplasm affecting the skeletal or smooth muscles. Malignant neoplasms
arising from the skeletal muscles are called rhabdomyosarcomas. Malignant neoplasms
arising from the smooth muscles are called leiomyosarcomas.;