Eighty-one cases of Bowen's disease and Bowen-carcinoma were observed for twenty-one years from 1974 to 1994. The male to female ratio was 1: 1. The number of patients had been increasing since 1981. The patients of Bowen's disease and Bowen-carcinoma occupied 0.09% of the total new out-patients in this period. The age distribution at the first consultation had a peak in the 8th decade of life. The common sites were lower leg, trunk, head and neck. Sixty-two percent of patients had tumors that were less than 3cm. There were 72 cases with solitary type (89%) and 9 cases with multiple type (11%) . Thirteen cases had visceral cancers. Almost all treatment in our clinic were excisions.
