Vulvar intraepithelial neoplasia has been considered a problem of postmenopausal years, but its frequency appears to be increasing among younger women. Bowen's disease is a form of VIN III carcinoma in situ, that may appear clinically as pigmented lesions. This pathology mostly concerns younger women, and is probably connected with human papilloma virus (HPV) infection. The incidence rate is very rare. During the last 15 years only four cases of Bowen's disease have been diagnosed and treated in Division of Gynecological Oncology in Poznań. In this paper we presented symptoms, diagnostic procedures, results of clinical and histopathologic evaluation as well as managements methods. Also the results of treatment and reports on follow-up visits have been discussed.