any malignant growth or tumor caused by abnormal and uncontrolled cell division; it may spread to other parts of the body through the lymphatic system or the blood stream

a malignant neoplasm of cartilage cells

malignant tumor in bone marrow (usually in the pelvis or in long bones)

a sarcoma that starts with purplish spots on the feet and legs and spreads from the skin to lymph nodes and internal organs; a common manifestation of AIDS

sarcoma of smooth muscle; occurs most often digestive tract or uterus or bladder or prostate

sarcoma of fat cells