| umls-concept:C0041582 | skos:definition | MSH: A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.,CSP: local defect or excavation of the surface of an organ or tissue produced by the sloughing of inflammatory necrotic tissue.,NCI: 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.,NCI: The formation or development of an ulcer. (NCI),NCI: The formation or development of an ulcer.,NCI: A circumscribed inflammatory and often suppurating lesion on the skin or an internal mucous surface resulting in necrosis of tissue. | lld:umls |
