Epidermoid carcinoma of the gingiva.
D002294:Carcinoma, Squamous Cell / Q000209:etiology*; D005887:Gingival Neoplasms / Q000209:etiology*; D006801:Humans; D011701:PUVA Therapy / Q000009:adverse effects*; D010778:Photochemotherapy / Q000009:adverse effects*; D011565:Psoriasis / Q000188:drug therapy