NCI Dictionary of Cancer Terms

The NCI Dictionary of Cancer Terms features 8,489 terms related to cancer and medicine.

We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.

cutaneous leiomyoma
(kyoo-TAY-nee-us LY-oh-my-OH-muh)
A benign (not cancer) tumor that forms in the muscle tissue around a hair follicle (the opening on the skin through which hair grows). Cutaneous leiomyomas appear as small bumps that may be the same color as, or darker than, the nearby skin. They usually occur on the arms, legs, chest, and abdomen. Cutaneous leiomyomas tend to increase in size and number over time and can be painful to the touch or in cold temperatures. They often occur in patients with an inherited condition called hereditary leiomyomatosis and renal cell cancer.