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.