title: [Multiple primary malignant melanomas in psoriasis vulgaris under long-term methotrexate therapy].
mesh_terms: D004305:Dose-Response Relationship, Drug; D006801:Humans; D008134:Long-Term Care; D008297:Male; D008545:Melanoma / Q000139:chemically induced*; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000139:chemically induced*; D011565:Psoriasis / Q000188:drug therapy*; D012878:Skin Neoplasms / Q000139:chemically induced*
chemical_list: D008727:Methotrexate
vernacular_title: Multiple primäre maligne Melanome bei Psoriasis vulgaris unter einer Langzeit-Therapie mit Methotrexat.