HUMAN PAPILLOMAVIRUSES AND MULTIFOCAL GENITAL NEOPLASIA

In 143 patients with vulvar carcinoma (76 cases) or vulvar intraepithe lial neoplasia (VIN III, 67 cases), cervical cancer or cervical intrae pithelial neoplasia CIN III lesions developed in 39 patients (27%) at some time during their life. In patients with classic keratinizing squ amous cell carcinoma (KSC) of the vulva, cervical neoplasia developed in only one of 51 (2%), whereas the frequency was 10 of 25 (40%) in pa tients with vulvar carcinoma of the basaloid or warty type and 28 of 6 7 (42%) in patients with VIN III lesions. The original, paraffin-embed ded surgical specimens were examined by polymerase chain reaction and type-specific molecular hybridization for human papillomavirus (HPV) D NA of the types 6, 11, 16, 18, and 33. DNA of the oncogenic types HPV 16 or HPV 33 was found in 4% of the KSCs, in 84% of the basaloid or wa rty carcinomas, in 90% of VIN III lesions, and in 89% of the cervical lesions. The same HPV type was found in both lesions in 81% of the pat ients with double primary tumors. The results support the concept that VIN III and a subgroup of vulvar carcinomas are HPV-related lesions, that they are frequently associated with another HPV-related genital p rimary tumor, and that these multiprimary tumors are secondary to an H PV infection involving the entire genital tract.