Childhood Rhabdomyosarcoma

**Semantic type:** Neoplastic Process

**Definition:** An aggressive malignant mesenchymal neoplasm arising from skeletal muscle in children. Only a small percentage of tumors arise in the skeletal muscle of the extremities. The majority arise in other anatomic sites.

**Synonyms:** - Pediatric Rhabdomyosarcoma - Rhabdomyosarcoma