Endoscopic Ultrasound (EUS), allows the physician to examine the esophageal and stomach linings as well as the walls of the upper and lower gastrointestinal tract. EUS is also used to study the lungs, liver, gall bladder and pancreas.
After sedation an endoscope (thin flexible tube with a built-in miniature ultrasound probe) is passed through the patient’s mouth or anus. Sound waves from the ultrasound are used to create visual images of the digestive tract. EUS is also used to biopsy tissues and to aspirate fluid for analysis. These results may help to diagnose and stage cancers.