Monarch Disease Ontology term MONDO_0006389 (prostate rhabdomyosarcoma) is a malignant mesenchymal neoplasm with skeletal muscle differentiation affecting the prostate. Also known as: prostate gland rhabdomyosarcoma, prostate gland rhabdomyosarcoma (disease), rhabdomyosarcoma (disease) of prostate gland, rhabdomyosarcoma of prostate, rhabdomyosarcoma of the prostate.