title: Melanoma in a patient treated for psoriasis.
abstract: Psoriasis, ultraviolet light, and coal tar have been associated with the development of cutaneous malignancy. We have described a 32-year-old psoriatic man who developed a melanoma after 16 years of treatment with ultraviolet light and coal tar. This is the only case of melanoma occurring in a patient treated for psoriasis reported in the world literature.
mesh_terms: D000328:Adult; D003033:Coal Tar / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008545:Melanoma / Q000209:etiology*; D009381:Neoplasms, Radiation-Induced / Q000209:etiology*; D011565:Psoriasis / Q000628:therapy*; D012878:Skin Neoplasms / Q000209:etiology*; D014467:Ultraviolet Therapy / Q000009:adverse effects*
chemical_list: D003033:Coal Tar