Myopericytoma

Definition of myopericytoma
National Cancer Institute

myopericytoma

(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.

Source: NCI Dictionary of Cancer Terms