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Endoscopic Ultrasound (EUS)



Endoscopic ultrasound (EUS) is a procedure that allows a doctor to obtain images and information about the digestive tract and the surrounding tissue and organs, including the lungs. EUS combines ultrasound technology, using sound waves, with endoscopy to gain an internal vantage point to obtain higher resolution ultrasound images.

The addition of ultrasound allows the physician to see beyond the inner-most wall of the GI tract and visualize all layers as well as surrounding tissues and organs. The EUS is used to assess several types of cancers that include esophageal, gastric, rectal and pancreatic. EUS also provides a minimally invasive means for biopsy.

During the procedure, a small ultrasound device is installed on the tip of an endoscope, a small, lighted, flexible tube with a camera attached. By inserting the endoscope and camera into the upper or the lower digestive tract, the doctor is able to obtain high-quality ultrasound images of organs. Because the EUS can get close to the organ(s) being examined, the images obtained with EUS are often more accurate and detailed than images provided by traditional ultrasound which must travel from the outside of the body.