chondrosarcoma chon·dro·sar·co·ma (kŏn'drō-sär-kō'mə)
A malignant neoplasm derived from cartilage cells and occurring most frequently in pelvic bones or near the ends of long bones.
rare malignant tumour of bone formed from cartilage. Pain is the most common symptom. Primary chondrosarcomas arise from a small collection of cartilage cells; the secondary type develops slowly from a previously benign tumour of cartilage. The tumour may mestastasize to the lungs in some cases. An extremely rare form of chondrosarcoma also may occur as a primary tumour in soft tissues and muscle without involvement of the bone. Middle-aged and elderly persons are most often affected; the tumours are twice as common in males. Treatment includes surgical removal of the tumour
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