Bowen's disease

Bowen's disease (BD) (also known as "squamous cell carcinoma in situ") is a neoplastic skin disease, it can be considered as an early stage or intraepidermal form of squamous cell carcinoma. It was named after Mark Bowen. Erythroplasia of Queyrat is a form of squamous cell carcinoma in situ arising on the glans or prepuce, possibly induced by HPV. Causes of BD include solar damage, arsenic, immunosuppression (including AIDS), viral infection (human papillomavirus or HPV) and chronic skin injury and dermatoses. Bowen's disease typically presents as a gradually enlarging, well demarcated erythematous plaque with an irregular border and surface crusting or scaling. BD may occur at any age in adults but is rare before the age of 30 years -...