OverviewCervical intraepithelial neoplasia (CIN) is the presence of abnormal cells on the surface of the cervix. A Pap smear and colposcopy are two of the procedures performed to monitor the cells and appearance of the cervix.
Update Date 1/16/2015
Updated by: Cynthia D. White, MD, Fellow American College of Obstetricians and Gynecologists, Group Health Cooperative, Bellevue, WA. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.