A non-invasive skin cancer that involves the skin in and about the anus.
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 (cancerous). Also called precancerous dermatosis or precancerous dermatitis.
In medicine (dermatology), Bowen's disease (BD) is a sunlight-induced skin disease, considered either as an early stage or intraepidermal form of squamous cell carcinoma. It was named after Dr John T. Bowen, the doctor who first described it in 1912.