Relationship of Human Papillomavirus Subtypes and Multiple Infection with Different Cervical Precancerous Diseases in Sichuan Province

To investigate the relationship of human papillomavirus (HPV) subtypes and multiple infections with different cervical precancerous diseases. Retrospective study was done to review 1 226 patients with different cervical lesions who were pathologically diagnosed and scanned for HPV 23 subtypes with positive results from June 2006 to May 2012. These patients were divided into the following groups, chronic cervicitis, cervical condyloma, cervical intraepithelium neoplasia grade I (CIN I), grade II (CIN II), grade III (CINIII). There were significant differences in the proportion of HPV low risk types and high risk types between cervicitis, condyloma, CIN I group and CIN II + III groups (P