Description:
A rare type of soft tissue tumor that forms in fibrous connective tissue of the body, usually in the abdomen, head and neck, shoulders, upper arms, and thighs. Desmoid tumors are intermediate tumors, meaning they can grow into and damage nearby tissue (locally aggressive) but do not spread to other parts of the body. They are painful, difficult to completely remove with surgery, and often come back after surgery. Desmoid tumors occur in adults and children. Also called aggressive fibromatosis and desmoid-type fibromatosis.