Prevalence of papillomarvirus infection in colposcopically directed cervical biopsy specimens in 1972 and 1982.

A total of 1264 consecutive cervical biopsy specimens obtained at the Parkland Memorial Hospital Dysplasia Clinic during 1972 were reviewed. Histopathologic specimens were assessed with special reference to changes induced by human papillomavirus. In 1972, only 0.