On the ectocervix there is a transformation zone where the stratified squamous epithelium meets the columnar epithelium of the cervical canal. Elevated oestrogen levels (ovulatory phase, pregnancy, combined oral contraceptive pill use) result in larger area of columnar epithelium being present on the ectocervix

The term cervical erosion is used less commonly now

This may result in the following features

• vaginal discharge
• post-coital bleeding

Ablative treatment (for example 'cold coagulation') is only used for troublesome symptoms