NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,441 terms related to cancer and medicine.
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- listen (my-oh-PAYR-ih-sy-TOH-muh)
- A rare, slow-growing soft tissue tumor that begins in cells that wrap around blood vessels. Most myopericytomas are benign (not cancer). They can occur anywhere in the body, but usually occur in the legs, trunk (chest and abdomen), or head and neck. They can occur in children, but are most common in middle-aged adults.