Endoscopic Ultrasound

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Appointments by referral only

Endoscopic ultrasound (EUS) evaluates and makes images of the lining of the esophagus, stomach and duodenum as well as organs near the gastrointestinal tract such as the pancreas, gall bladder, liver, lungs and lymph nodes. 

EUS can:

  • Diagnose or find the cause of a pain or abnormality in the digestive tract
  • Locate and view tumors or abnormalities in the pancreas, bile ducts and chest cavity
  • Understand the extent of certain cancers 
  • Take tissue samples 
  • Drain a cyst
diagram of endoscope passed through digestive system
Endoscopic Ultrasound Copyright © Nucleus Medical Media, Inc.

About the EUS Procedure

Your doctor may numb your throat with a spray to ease any discomfort, as well as a sedative, to help you relax.  

The doctor passes a thin, flexible tube with a built-in, miniature ultrasound probe down your throat or up your rectum. The ultrasound takes images, and the doctor may take tissue samples or drain cysts, as needed.

EUS takes 15-45 minutes.

After the Test

After the test, you may have slight bloating from the air and water that entered your digestive tract.

Possible complications include:

  • Infection
  • Bleeding
  • Mild sore throat for 1-2 days
  • Reaction to sedatives
  • Regurgitation of stomach contents into the lungs
  • Damage to digestive tract

Cause for Concern

After the test, call your doctor if any of the following occurs:

  • Pain or discomfort that does not go away or worsens
  • Vomiting blood, blood in stool or dark black stool
  • Indigestion
  • New or unusual symptoms

In case of an emergency, call for medical help right away.


Content was created using EBSCO’s Health Library. Edits to original content made by Rector and Visitors of the University of Virginia. This information is not a substitute for professional medical advice.