Endoscopic ultrasound (EUS) is a minimally invasive procedure to assess digestive (gastrointestinal) and lung diseases. A special endoscope uses high-frequency sound waves to produce detailed images of the lining and walls of your digestive tract and chest, nearby organs such as the pancreas and liver, and lymph nodes.
When combined with a procedure called fine-needle aspiration, EUS allows your doctor to sample (biopsy) fluid and tissue from your abdomen or chest for analysis. EUS with fine-needle aspiration can be a minimally invasive alternative to exploratory surgery.
EUS techniques are also used in certain treatments, such as draining pseudocysts.
Mayo Clinic's approach
July 01, 2017
- Longo DL, et al., eds. Gastrointestinal endoscopy. In: Harrison's Principles of Internal Medicine. 19th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.com. Accessed March 5, 2017.
- Understanding EUS (Endoscopic ultrasound). American Society of Gastrointestinal Endoscopy. https://www.asge.org/home/for-patients/patient-information/understanding-eus. March 5, 2017.
- Greenberger NJ, et al., eds. Endoscopic ultrasound. In: Current Diagnosis & Treatment: Gastroenterology, Hepatology & Endoscopy. 3rd ed. New York, N.Y.: The McGraw-Hill Companies; 2015. http://accessmedicine.mhmedical.com/content.aspx?bookid=1621§ionid=10518592. Accessed March 10, 2017.
- Wiersema MJ, et al. Endoscopic ultrasound-guided fine-needle aspiration biopsy in the gastrointestinal tract. http://www.uptodate.com/home. Accessed March 5, 2017.
- Lakhtakia S, et al. Complications of diagnostic and therapeutic endoscopic ultrasound. Best Practice & Research Clinical Gastroenterology. 2016;30:807.
- Riggin EA. Allscripts EPSi. Mayo Clinic, Rochester, Minn. January 9, 2017.