The formation of a break on the skin or on the surface of an organ. An ulcer forms when the surface cells die and are cast off. Ulcers may be associated with cancer and other diseases.
an inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
the process of ulcer formation; the process of becoming ulcerated
a circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue
