Endoscopic Ultrasound


Endoscopic Ultrasound (EUS) is a procedure to evaluate, diagnose, and treat abnormalities that lie in the wall beneath the lining of the gastrointestinal tract or in tissue outside of, but adjacent to, the digestive system.

This procedure is used to diagnose and treat benign and malignant conditions of the esophagus, stomach, duodenum, colon and rectum, gallbladder, and pancreas.


After adequate patient sedation, a thin flexible instrument (called an endoscope) is passed through either the mouth or anus to the desired location in the digestive tract.

Using a small ultrasound probe attached to the end of the scope, the physician can image abnormalities arising beneath the gastrointestinal lining or in the structures next to it. These areas cannot be seen during a standard endoscopic procedure such as upper endoscopy or colonoscopy and may not be as well seen on a traditional ultrasound, CT Scan, or MRI.

By passing a needle through the scope, tissue biopsy samples can be obtained for further analysis.


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