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Health Encyclopedia

Health Encyclopedia

An invaluable resource of health information.

Enteroscopy

Enteroscopy is a procedure used to examine the small intestine (small bowel).

  • Alternative Names

    Small bowel biopsy; Push enteroscopy; Double-balloon enteroscopy; Capsule enteroscopy; Sonde enteroscopy

  • How the test is performed

    A thin, flexible tube (endoscope) is inserted through the mouth or nose and into the upper gastrointestinal tract. During a double-balloon enteroscopy, balloons attached to the endoscope can be inflated to allow the doctor to view a large part of the small intestine.

    In a colonoscopy, a flexible tube is inserted through your rectum and colon. The tube usually can reach into the end part of the small intestine (ileum). See also: Colonoscopy

    Tissue samples removed during enteroscopy are sent to the laboratory for examination.

  • How to prepare for the test

    Do not take products containing aspirin for 1 week before the procedure. Tell your doctor if you take blood thinners such as warfarin (Coumadin) or clopidogrel (Plavix), because these may interfere with the test. Do NOT stop taking any medication unless told to do so by your health care provider.

    Do not eat any solid foods or milk products after midnight the day of your procedure. You may have clear liquids until 4 hours before your exam.

    You must sign a consent form.

  • How the test will feel

    When the tube is put into your mouth and down your esophagus (food pipe), you may feel like gagging. You will get a numbing medicine to reduce this feeling.

    You may get a mild sedative, but only in small doses because you must stay alert enough to help with the procedure (by doing such things as swallowing and turning). The biopsy sampling causes little or no pain, although you may have some mild cramping.

  • Why the test is performed

    This test is most often performed to help diagnose diseases of the small intestines. It may be done if you have:

    • Abnormal x-ray results
    • Tumors in the small intestines
    • Unexplained diarrhea
    • Unexplained gastrointestinal bleeding
  • Normal Values

    In a normal test result, the health care provider will not find sources of bleeding in the small bowel, and will not find any tumors or other abnormal tissue.

  • What abnormal results mean

    Abnormal findings may include:

    • Abnormalities of the tissue lining the small intestine (mucosa) or the tiny, finger-like projections on the surface of the small intestine (villi)
    • Immune cells called PAS-positive macrophages
    • Polyps or cancer
    • Radiation enteritis
    • Swollen or enlarged lymph nodes or lymphatic vessels
    • Ulcers

    Changes found on enteroscopy may be signs of disorders and conditions including:

  • What the risks are

    Complications are rare but may include:

    • Excessive bleeding from the biopsy site
    • Hole in the bowel (bowel perforation)
    • Infection of the biopsy site leading to bacteremia
    • Vomiting, followed by aspiration into the lungs
  • Special considerations

    Factors that prohibit use of this test may include:

    • Uncooperative or confused patients
    • Untreated blood clotting (coagulation) disorders
    • Use of aspirin or other medicines that prevent the blood from clotting normally (anticoagulants)

    The greatest risk is bleeding. Signs include:

  • References

    Bjorkman DJ. Gastrointestinal hemorrhage and occult gastrointestinal bleeding. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier;2007:chap 137.

    Sidhu R, Sanders DS, Morris AJ, McAlindon ME. Guidelines on small bowel enteroscopy and capsule endoscopy in adults. Gut. 2008;57:125-136.

Review Date: 1/20/2010

Reviewed By: David C. Dugdale III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; and George F. Longstreth, MD, Department of Gastroenterology, Kaiser Permanente Medical Care Program, San Diego, California. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2014 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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