Introduction: In women with previous traumatic lesions of the uterine cervix human papilloma virus (HPV) may infect cervical epithelium and reach basal and parabasal cells. Objetives: To determine the existence of a stronger relationship between women with vaginal deliveries and cervical squamous cancer and precursors, and women with exclusive cesarean sections. Design: Case-control study. Setting: Hospital Regional Docente de Trujillo, Peru. Participants: Women with clinical and histology diagnosis of cervical cancer and its precursors. Interventions: We included 177 women with clinical and histological diagnosis of cervical cancer or its precursors attended between 2000 and 2002; 197 women without vaginal deliveries or exclusive cesarean section were considered as controls. To determine factors associated with cervical cancer and its precursors we used multivariate analysis and logisti...

Introduction: In women with previous traumatic lesions of the uterine cervix human papilloma virus (HPV) may infect cervical epithelium and reach basal and parabasal cells. Objetives: To determine the existence of a stronger relationship between women with vaginal deliveries and cervical squamous cancer and precursors, and women with exclusive cesarean sections. Design: Case-control study. Setting: Hospital Regional Docente de Trujillo, Peru. Participants: Women with clinical and histology diagnosis of cervical cancer and its precursors. Interventions: We included 177 women with clinical and histological diagnosis of cervical cancer or its precursors attended between 2000 and 2002; 197 women without vaginal deliveries or exclusive cesarean section were considered as controls. To determine factors associated with cervical cancer and its precursors we used multivariate analysis and logisti...