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NCI Dictionary of Cancer Terms


precancerous dermatitis  listen  (pree-KAN-seh-rus DER-muh-TY-tis)

  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.