For an endoscopic ultrasound, a small ultrasound transducer is installed on the tip of an endoscope, which also has a light and a camera at the end. Both the upper digestive tract and lower digestive tract can be examined using an endoscopic ultrasound. To view the upper digestive tract, the endoscope is inserted through the mouth. To view the lower digestive tract, the endoscopic is inserted through the anus. With an endoscopic ultrasound, the use of ultrasound enables high-quality, detailed images that are used for the evaluation and diagnosis of digestive disease. In addition, a fine needle aspiration (FNA), which allows for biopsies, can be conducted during an endoscopic ultrasound.
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