clear cell sarcoma of soft tissue
(kleer sel sar-KOH-muh ... TIH-shoo)
A soft tissue tumor that begins in a tendon (tough, fibrous, cord-like tissue that connects muscle to bone or to another structure). Clear cell sarcoma of soft tissue has certain markers that are also found on malignant melanoma (a type of skin cancer). It usually occurs in the leg or arm. Also called malignant melanoma of soft parts.