Cutaneous T cell lymphoma includes a group of rare cancers that involve the skin. In these cancers, white blood cells attack the skin causing a variety of skin lesions. The most common forms of cutaneous T cell lymphoma are mycosis fungoides and Sézary syndrome. Cutaneous T cell lymphoma is more common in men and individuals with a sub-Saharan African heritage. For more information contact: American Cancer Society: (800) 227-2345