Endoscopic Ultrasound, also known as EUS or Endosonography, is a specialized endoscopic study that enables your doctor to examine your stomach lining and the walls of your upper and lower gastrointestinal tack. EUS is also used to study internal organs next to the intestinal tract such as the Gall Bladder and Pancreas.
The procedure is similar to routine endoscopy (EGD) or colonoscopy. A flexible tube is guided visually into the mouth or rectum. Then the EUS is used to scan and obtain ultrasound images. It is also possible to obtain tissue sampling via a fine needle aspirate (FNA) using real time ultrasound guidance.
EUS is generally a safe procedure, but carries several risks that include, but are not limited to, infection, perforation and bleeding. Serious complications of EUS, such as perforation or bleeding, are rare, but may require hospitalization, blood transfusions, or surgery.