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What is endoscopic ultrasound?

Endoscopic ultrasound (EUS) is a diagnostic procedure performed by a gastroenterologist with advanced training. The procedure combines endoscopy and ultrasound to provide high-resolution, real-time imaging of the upper and lower gastrointestinal tract and surrounding organs. It is often performed as an outpatient procedure under IV sedation.

When it is used to examine the upper digestive tract your esophagus, stomach and small intestines, and the nearby organs – the pancreas, gallbladder and bile ducts and associated lymph nodes, cysts, and blood vessels can be visualized. When used to examine the lower digestive tract your rectum and lower colon, nearby organs – the bladder, prostate and uterus, lymph nodes and tumors, and the anal sphincter can be visualized.

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