There are a number of tumours of muscular origin, which overall are relatively uncommon, representing ~2% of benign soft tissue tumours and ~10% of malignant soft tissue tumours 1.
Pathology
The tumours can be divided according to the type of muscle fibre:
Skeletal muscle origin
- benign
-
rhabdomyoma
- extracardiac (non-cardiac) rhabdomyoma
- cardiac rhabdomyoma
-
rhabdomyoma
- malignant
-
rhabdomyosarcoma
- embryonal rhabdomyosarcoma subgroup
- alveolar rhabdomyosarcoma
- pleomorphic rhabdomyosarcoma
-
rhabdomyosarcoma
Smooth muscle origin
- benign
- malignant