GlossaryUlcer: A break in the skin or mucous membraneEverted edge: The edge of the ulcer overlaps the skin due to the rapid growth of the cells within the ulcerPolyps: Small growths of tissue that are usually benign but may sometimes turn malignant Squamous cell carcinoma: Skin cancer of the squamous cells that constitute the upper layers of the skinMalignant melanoma: A skin cancer that arises from the pigment cells of the skin Published on Feb 19, 2015Last Updated on May 05, 2015