Endoscopic ultrasonography (EUS) is used to view the walls of your digestive tract and other nearby organs. An ultrasound uses sound waves to make images of the inside of the body. In an EUS, the ultrasound probe is passed down the throat or up the rectum and into digestive tract.
Reasons for Test
EUS may be used to:
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 and whether they have spread to lymph glands or other vital organs
Take tissue samples (biopsy) to diagnose a condition
Provide needle aspiration (to drain a cyst)
Complications are rare, but no test is completely free of risk. If you are planning to have EUS, your doctor will review a list of possible complications, which may include:
Mild sore throat for 1-2 days
Reaction to sedatives
Regurgitation of stomach contents into the lungs
Damage to digestive tract
Factors that may increase the risk of complications include:
Having other medical conditions
Be sure to discuss these risks with your doctor before the test.
What to Expect
Prior to Test
Leading up to the test, your doctor may instruct you to:
Avoid eating or drinking (not even water) for at least six hours before the test.
Take a special cleansing solution, laxative, or enema. This will clean out your intestines. You may also be asked to follow a clear liquid diet.
Arrange for a ride home after the test if you have to take a sedative.
In most cases, it is okay to take
and other blood-thinning medicines before the test. Ask your doctor if you take these medicines.
Description of the Test
Your doctor may spray your throat with a local anesthetic. This will numb your throat, so you will not feel discomfort. You may also be given a sedative. This will help you to relax and reduce anxiety.
In most cases, you will lie on your left side. A thin, flexible tube, called an endoscope, will be inserted either through your throat or anus. The endoscope will have an ultrasound probe on the end of it. The ultrasound machine will create images of the digestive tract. When the imaging is done, your doctor will gently pull the endoscope out.
An endoscope allows the doctor to view inside organs.
Please be aware that this information is provided to supplement the care
provided by your physician. It is neither intended nor implied to be a
substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER
IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the
advice of your physician or other qualified health provider prior to
starting any new treatment or with any questions you may have regarding a