What Is Rhabdomyosarcoma? – cancer.org

Anaplastic rhabdomyosarcoma and undifferentiated sarcoma. Anaplastic rhabdomyosarcoma (also called pleomorphic rhabdomyosarcoma) is an uncommon type that occurs mainly in adults and is very rare in children. Some doctors also group undifferentiated sarcomas with the rhabdomyosarcomas. Using lab tests, doctors can tell that these cancers are …

https://www.cancer.org/cancer/rhabdomyosarcoma/about/what-is-rhabdomyosarcoma.html