Precancerous and background processes are characterized by the proliferation of epithelial cells leading to the subsequent glandular polyps, true and false cervical erosion, endocervicitis, ectropion, papillion, and foci of leukoplakia. The greatest clinical importance in the area of the junction of the stratified squamous epithelium of the vaginal portion of the cervix and the columnar epithelium of the cervical canal, as in this zone most often develop pathological processes. Depending on the age of the woman and the state of hormonal balance the junction of two epithelial cells can be located at different levels. From the neonatal period until the end of puberty, the joint may be below the level of the external uterine OS, leaving the vaginal portion of the cervix. In the reproductive age (from 20-22 to 40-45 years old) place of transition epithelia is at the level of the external pharynx, and in pre climate period or post-menopausal condition can be displaced into the cervical canal, becoming inaccessible for visual inspection, making it difficult to identify pathological processes.