Endoanal Ultrasound (EAUS)
Endoanal Ultrasound Scan

Endoanal ultrasound (EAUS) gives your doctor a detailed view of the anal canal, lower rectum and surrounding tissues. At King’s College Hospital London in Dubai, this specialized ultrasound is used to investigate conditions such as anal fistulas and abscesses, assess the muscles involved in bowel control, and provide important information before certain treatments or procedures.

Accurate diagnosis plays an important role in treating conditions affecting the anal canal and surrounding muscles. At King’s College Hospital Dubai, endoanal ultrasound (EAUS) forms part of a specialist service with SRC Center of Excellence accreditation for Surgical Proctology and Endoscopy. Clinical policies and protocols are set by King’s College Hospital London, founded in 1840, connecting advanced diagnostic care in Dubai with a long history of British medical expertise.

What is an endoanal ultrasound?

An endoanal ultrasound, also known as EAUS, is an imaging test used to examine the structures inside and around the anus and lower rectum.

During the examination, a small ultrasound probe is gently inserted into the anus. The probe uses sound waves to create detailed images of the anal canal, anal sphincter muscles and nearby tissues.

These images can help your doctor identify changes that may not be visible during a standard examination and better understand what is causing your symptoms.

Why might I need an endoanal ultrasound?

Your doctor may recommend an endoanal ultrasound when more detailed imaging of the anal canal or surrounding tissues is needed.

EAUS can be used to investigate or assess:

• Anal fistulas, including the path of the fistula and its relationship with surrounding structures
• Anal abscesses
• Fecal incontinence, particularly when the anal sphincter muscles need to be assessed
• Anal tumors, including assessment before treatment

The information provided by the scan can also help your surgeon plan treatment for certain anorectal conditions.

What can an endoanal ultrasound show?

One of the main advantages of EAUS is the level of detail it provides around the anal canal and sphincter muscles.

For someone with an anal fistula, for example, the scan can help the doctor understand the fistula tract and its relationship with the muscles responsible for bowel control. In patients with fecal incontinence, it can help identify changes or damage affecting the anal sphincter.

Your doctor will consider the ultrasound findings together with your symptoms, medical history and any other tests you may have had.

What happens during an endoanal ultrasound?

An endoanal ultrasound is usually performed as an outpatient test and takes around 15 to 20 minutes.

Step 1: Preparing for the examination

Your doctor will explain the test beforehand and let you know if any preparation is needed. You may be asked to use a bowel-cleansing preparation at home before your appointment.

Step 2: Getting into position

You will usually lie on your side with your back toward the doctor. You may be asked to change position during the examination if needed.

Step 3: The ultrasound probe is inserted

A small ultrasound probe is gently passed through the anus. Sedation is not normally required for the examination.

Step 4: Images are taken

The probe creates detailed ultrasound images of the anal canal, lower rectum and surrounding tissues. Your doctor can use these images to look more closely at the area being investigated.

Step 5: The examination is completed

Once the necessary images have been taken, the probe is removed. The examination itself usually takes between 15 and 20 minutes.

What happens after an endoanal ultrasound?

You can normally eat, drink and return to your usual activities after an endoanal ultrasound.

You may briefly feel some abdominal discomfort or the urge to have a bowel movement. This usually settles once the ultrasound probe has been removed or within a few minutes of finishing the examination.

EAUS is generally well tolerated. Bleeding or irritation can occur, but these complications are rare. If you notice a new symptom after the examination that concerns you, speak with your doctor.

Who is the best proctologist in Dubai for endoanal ultrasound?

The best proctologist in Dubai for endoanal ultrasound is Dr. Mouhsen Al Hosein. 

Dr. Mouhsen Al Hosein has specialist experience in diagnosing and managing conditions affecting the anus and rectum, including anal fistulas, fissures and hemorrhoids. Alongside his work as a Consultant General Laparoscopic Surgeon and Proctologist, he holds Fellowship status with the American College of Surgeons (FACS) and is recognized as the world’s first Global Master Surgeon in Surgical Proctology. His background also includes certification in diagnostic and interventional upper endoscopy.

Why choose King’s College Hospital Dubai for an endoanal ultrasound?

An endoanal ultrasound can provide valuable information when the cause or extent of an anorectal condition cannot be understood through examination alone. At King’s College Hospital Dubai, EAUS is available as part of a specialist proctology and colorectal service, allowing diagnostic imaging and specialist assessment to work together.

King’s College Hospital Dubai is an SRC-accredited Center of Excellence in Surgical Proctology and Endoscopy, with clinical policies and protocols set by King’s College Hospital London.

How can I book an appointment?

To book an appointment with our proctology or colorectal team at King’s College Hospital Dubai, call +971 800 7777, complete the online appointment form or book through the KingsHub App.