Morbus Bowen. A description of the disease in 617 patients.

Between 1943 and 1983 a total of 617 patients were diagnosed to have morbus Bowen (m.B.). Eighty percent of the patients were over 60 years old at the time of diagnosis. Three-fourth had their disease on sun-exposed areas (head, neck and hands). Almost 1/4 had concomitant basal cell epithelioma (c.b.) and 1/10 squamous cell carcinoma (c.s.). Approximately 1/5 had multiple m.B. tumours. Effective therapy was curettage followed by cauterization, excision, or X-ray.