| umls-concept:C0023531 | skos:definition | MSH: A white patch lesion found on a MUCOUS MEMBRANE that cannot be scraped off. Leukoplakia is generally considered a precancerous condition, however its appearance may also result from a variety of HEREDITARY DISEASES.,NCI: An abnormal patch of white tissue that forms on mucous membranes in the mouth and other areas of the body. It may become cancer. Tobacco (smoking and chewing) and alcohol may increase the risk of leukoplakia in the mouth.,NCI: A white patch or plaque on a mucous membrane that cannot be characterized clinically or pathologically as any other disease. The diagnosis of leukoplakia is one of exclusion; other conditions such as candidiasis, lichen planus, leukoedema, etc. must be ruled out before a diagnosis of leukoplakia can be made. Leukoplakia may be a premalignant condition. | lld:umls |
