title: [Psoriasis and cancer].
abstract: This study reports the cancer incidence among 6910 individuals in Denmark discharged from hospital over the period 1977-1987 with a diagnosis of psoriasis. Patients were identified in the National Hospital Discharge Register and information on cases of cancer was obtained through the files of the Danish Cancer Registry. A 2,5-fold increased risk was observed for nonmelanoma skin cancer in men and women, with no preponderance of any specific histologic subtype of cancer. The incidence of non-cutaneous cancers at all sites combined was significantly increased in the study group, owing mainly to excesses of lung cancer in men (relative risk (RR) = 1.4) and women (RR = 1.6), of cancer of the larynx and pharynx in men (RR = 2.8 and 3.9), and of colon and kidney cancer in women (RR = 1.6 and 2.3). The effect of cigarette smoking on the risk for non-cutaneous cancer could not be assessed in this study; however, antipsoriatic treatment such as ionizing radiation and oral arsenicals must be considered as a possible cause, particularly in relation to colon cancer which has been observed in excess in two other studies of psoriatic patients, but also in relation to kidney and lung cancer.
authors.affiliation: Sektor for Kraeftepidemiologi, Kraeftens Bekaempelse, København.
authors.forename: J H
authors.initials: JH
authors.lastname: Olsen
authors.forename: G
authors.initials: G
authors.lastname: Frentz
authors.forename: H
authors.initials: H
authors.lastname: Møller
mesh_terms: D003718:Denmark / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D009369:Neoplasms / Q000453:epidemiology / Q000209:etiology*; D011565:Psoriasis / Q000150:complications* / Q000453:epidemiology / Q000628:therapy; D012189:Retrospective Studies; D012307:Risk Factors
vernacular_title: Psoriasis og cancer.