precancerous dermatitis

Definition / meaning of precancerous dermatitis

A skin disease marked by scaly or thickened patches on the skin and often caused by prolonged exposure to arsenic. The patches often occur on sun-exposed areas of the skin and in older white men. These patches may become malignant (cancer). Also called Bowen disease and precancerous dermatosis.

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Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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