The beginning of sexual activity at an early age and relationships with multiple partners are relevant factors associated with cervical carcinogenesis due to the anatomical differences of the cervix between teenagers and adults. This study aimed to determine the prevalence of lower genital tract lesions in adolescent on treatment at the Women's Integrated Health Care Center. The work was a descriptive observational study in which were studied 35 adolescents with epithelial changes at the lower genital tract confirmed by biopsies. These patients were being treated at the Women's Integrated Health Care Center in Aracaju, between May 2012 and May 2013. This study covered all patients who met the inclusion criteria and agreed to participate through informed consent. For statistical analysis, the EPI-INFO 7 program was used and Fisher and Mantel-Haenszel exact tests were performed combination. This research was submitted to the Ethics Committee on Research Involving Human Subjects of the Federal University of Sergipe. In 35 adolescents who participated in the survey 85.71% had abnormalities suggestive of infection by human papilloma virus (HPV). Five patients, 14.29%, had low-grade lesion and no teenager had a high-grade lesion. Conclusion: Conclusion: The mean age was around 17.4 years, the first intercourse between 12 and 14 years and most had 1-2 partners. Association was found between the diagnosis of the patient and the use of condoms and highly significant association between the diagnosis and the number of preventive conducted.