The study of cancers of the vulva, first of all, attempts to classify precancerous lesions of the external genital apparatus. The proceedings of the ISSVD were carried out here in 1975. Clinical, epidemiological and viral arguments of HPV and HSV have been considered in order to demonstrate their responsibility in neoplasms of the vulva. However, HPV seems the main cocarcinogen. Cancers of the vulva appear, therefore, as a true sexually transmitted disease and the authors emphasize a simultaneous monitoring of the cervix and the male genital apparatus.