smooth muscle cancer leiomyosarcoma An uncommon, aggressive malignant smooth muscle neoplasm, usually occurring in post-menopausal women. It is characterized by a proliferation of neoplastic spindle cells. Morphologic variants include epithelioid, granular cell, inflammatory and myxoid leimyosarcomas. DOID:1967 EFO:0000564 GARD:0006880 ICD10:C49.9 ICD9:171.9 ICDO:8890/3 Leiomyosarcomas MESH:D007890 MONDO:0005058 MedDRA:10024189 NCIT:C3158 ONCOTREE:LMS Orphanet:64720 SCTID:443719001 UMLS:C0023269 https://rarediseases.info.nih.gov/diseases/6880/leiomyosarcoma leiomyosarcoma leiomyosarcoma (excluding uterine leiomyosarcoma) leiomyosarcoma - not uterine leiomyosarcoma, malignant Epstein-Barr virus-associated mesenchymal tumor soft tissue sarcoma