title: [Multiple rectal ulcer developing in a 28-year-old male patient with collagen disease].
authors.forename: Keiji
authors.initials: K
authors.lastname: Hirata
mesh_terms: D000328:Adult; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000150:complications*; D008297:Male; D012002:Rectal Diseases / Q000209:etiology*; D014456:Ulcer / Q000209:etiology*