2008 Volume 118 Issue 14 Pages 3075-3081
For 15 years from 1990 to 2004, 196 patients with Bowenʼs disease were seen at the Department of Dermatology, University of Occupational and Environmental Health, including 40 cases (20.4%) of the multiple type. The frequency of Bowenʼs disease among newly visiting outpatients was 0.61%, which was higher than those reported by other institutes. The average age of the patients at first visit was 73.0 years, and the male to female ratio was 0.77:1. The predilection sites of solitary Bowenʼs diseases were the lower extremities, followed by the trunk and upper extremities. The multiple type occurred on the fingers and palms, dorsa of feet, and legs. There were differences in the frequency of the multiple type among various areas in Kitakyushu City. In our retrospective search, tar was the most highly incident causative agent in the patients with multiple Bowenʼs disease; at least four patients had an occupational history of dealing with tar.
