title: Multiple keratoacanthoma and squamous cell carcinoma in psoriasis.
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000150:complications*; D003033:Coal Tar / Q000009:adverse effects / Q000627:therapeutic use; D006801:Humans; D007636:Keratoacanthoma / Q000150:complications* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D009381:Neoplasms, Radiation-Induced; D011565:Psoriasis / Q000150:complications* / Q000628:therapy; D012871:Skin Diseases / Q000150:complications* / Q000628:therapy; D012878:Skin Neoplasms / Q000150:complications* / Q000209:etiology
chemical_list: D003033:Coal Tar