clear cell sarcoma A rare malignant neoplasm with melanocytic differentiation characterized by the presence of polygonal or spindle shaped clear cells. This sarcoma usually affects the tendons and aponeuroses and is associated with a poor prognosis due to recurrences and metastases. DOID:4233 EFO:0008498 ICD9:171.9 ICDO:9044/3 MESH:D018227 MONDO:0002926 NCIT:C3745 ONCOTREE:CCS SCTID:402561003 UMLS:C0206651 adult soft part clear cell sarcoma chordoid sarcoma clear cell sarcoma (morphologic abnormality) clear cell sarcoma - not kidney clear cell sarcoma of soft parts clear cell sarcoma of soft tissue clear cell sarcoma/malignant melanoma of soft parts (excluding clear cell sarcoma of the kidney) malignant melanoma of soft parts malignant melanoma of soft tissues malignant melanoma of the soft parts melanoma, malignant, of soft parts soft tissue sarcoma