Lower Gastrointestinal Endoscopic Ultrasonography


  • Lower gastrointestinal (gas-tro-in-TES-ti-nal) endoscopic (EN-do-skop-ik) ultrasound (UL-trah-sownd) is a procedure to check the different parts of the lower gastrointestinal tract (GIT). The lower GIT includes some parts of the small intestines, the colon and rectum. The colon is the long tube that connects the small bowel with the anus (opening through which stool passes). The colon absorbs water from digested foods and turns the digested food into stool. It stores the stool until it passes out through your anus. Lower GIT endoscopic ultrasound is used to help diagnose and treat diseases that affect the lower GIT. These may include tumors, bleeding, abscess (collection of pus), or anal fistula (an abnormal connection from the anus to another organ). This procedure may also examine structures close to the lower GIT, such as the reproductive organs, liver, pancreas, kidneys, and lymph nodes.

  • With lower GI endoscopic ultrasound, caregivers use an echoendoscope to help see the GIT. An echoendoscope is a thin and flexible (bendable) metal tube with a small transducer (sensor) on its tip. This transducer works using a water-filled balloon which produces an ultrasound (high energy sound waves). As the sensor touches a certain lower GI part, pictures are seen on a TV-like screen. Some echoendoscopes have a tiny camera to give caregivers a clearer view of the organ while watching the images on a monitor. With lower GI endoscopic ultrasound, conditions of the GIT may be diagnosed, and treatment given as soon as possible.


Take your medicine as directed.

Call your healthcare provider if you think your medicine is not helping or if you have side effects. Tell him if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.

Ask for information about where and when to go for follow-up visits:

For continuing care, treatments, or home services, ask for more information.

  • Ask your caregiver when the results of your test will be available.

Eat healthy foods:

Choose healthy foods from all the food groups every day. Include whole-grain bread, cereal, rice, and pasta. Eat a variety of fruits and vegetables, including dark green and orange vegetables. Include dairy products such as low-fat milk, yogurt, and cheese. Choose protein sources, such as lean beef and chicken, fish, beans, eggs, and nuts. Ask how many servings of fats, oils, and sweets you should have each day, and if you need to be on a special diet.

Drinking liquids:

Adults should drink about 9 to 13 cups of liquid each day. One cup is 8 ounces. Good choices of liquids for most people include water, juice, and milk. Coffee, soup, and fruit may be counted in your daily liquid amount. Ask your caregiver how much liquid you should drink each day.


Rest when you feel it is needed. Slowly start to do more each day. Return to your daily activities as directed.


  • You have a fever.

  • You have a feeling of being too full or bloated.

  • You have nausea (upset stomach) or vomiting (throwing up).

  • Your skin is itchy, swollen, or has a rash.

  • You have questions or concerns about your procedure, condition, or care.


  • You are not able to eat or drink.

  • You have problems having a bowel movement.

  • You have trouble breathing all of a sudden.

  • Your abdomen (stomach) becomes tender and hard.

  • Your stools are black or have blood in them.

  • Your vomit (throw up) has blood or bile in it.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Learn more about Lower Gastrointestinal Endoscopic Ultrasonography (Discharge Care)