Endo-anal Ultrasound Scan

For symptoms such as faecal incontinence, this test looks at the structure of the muscles in your back passage, and can see if there is any structural abnormalities or damage to the muscles.

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What is an endo-anal ultrasound scan?

Endoanal ultrasound assesses the structure of the muscles in your anal canal (back passage).

A smooth, finger-sized probe, which is connected to a computer screen for image display, is inserted into your back passage. This allows us to visualise the structure of the muscles and take pictures. We can assess whether there are any structural abnormalities or damage to the muscles of your back passage.

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How it works

Your test will be conducted by your physiologist in a private room with a chaperone present. They will explain the test and ask about your symptoms. You will then change into a gown and lie on the couch ready for the test.

Your physiologist will insert a narrow probe (about the width of your index finger) into your back passage. It may feel uncomfortable but should not be painful.

The screen connected to the probe will enable the physiologist to view images of the muscles around your back passage.

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Preparing for your test

Before you test, there are some things we ask you to do, to ensure safety and accurate results. This includes stopping certain medication and fasting for a short period.

Please read our patient information leaflet for full details.

The day of your test

You can continue taking any normal medication.
You can eat and drink as normal.

Getting your test results

The results will analysed by our clinical team to see if your back passage has any structural abnormalities or damage to the muscles.

Following your test, your data will be analysed and results written up into a report within 24 hours. The report will be sent to both you and your referring consultant/doctor, who will explain the results to you in a follow-up consultation.