plaques

Definition of mycosis fungoides plaque
National Cancer Institute

mycosis fungoides plaque

(my-KOH-sis fun-GOY-deez plak)
A small, raised bump or thick, hard lesion that forms on the skin of patients with a type of skin lymphoma called mycosis fungoides. Plaques may be red, scaly, and itchy and may look like eczema or psoriasis. They can occur anywhere on the body, but they are most common on the lower abdomen, upper thighs, buttocks, and breasts. Plaques may sometimes become tumors on the skin.

Source: NCI Dictionary of Cancer Terms