This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in


Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Cervical squamous epithelial dysplasia is characterised by:

  • basal hyperplasia - multi-layering of basal cells
  • nuclear pleomorphism
  • increased mitotic activity

Three grades are described:

  • CIN 1 - dysplasia limited to the basal one third of the squamous epithelium; previously referred to as "mild dysplasia"

  • CIN 2 - dysplasia extends into the middle third of the epithelium; previously, "moderate dysplasia"

  • CIN 3 - dysplasia extends into the upper third of the epithelium; previously, "severe dysplasia". The cells are virtually indistinguishable from frankly invasive carcinoma but the basement membrane remains intact

Create an account to add page annotations

Add information to this page that would be handy to have on hand during a consultation, such as a web address or phone number. This information will always be displayed when you visit this page