How is Anal Intraepithelial Neoplasia (AIN) Investigated?

When you are seen in clinic the consultant will take a full history and carry out a clinical examination. Usually this will involve a rigid sigmoidoscopy and sometimes a proctoscopy as well to carefully examine the anal canal.

Skin biopsies are normally required to establish the diagnosis. The surgeon will normally take several biopsies from around the anus to assess the extent of the changes, this process is referred to as mapping. This is normally carried out under a general anaesthetic.

We normally recommend that all women are also seen and assessed by a gynaecologist to check for vulval or cervical disease.



What are the next steps?
If you think you have this condition or any of these symptoms
you will need to seek medical advice.
For more information or to make an appointment.
Contact birmingham bowel clinic on 0845 241 7762
or email
If you have private medical care or wish
to pay to see a consultant.
Take this factsheet along to your own
GP and request a referral to one
of our consultants
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