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Definition Return to top
An endoscope is a medical device consisting of a camera mounted on a flexible tube. Small instruments can be used to take samples of suspicious tissues through the endoscope.
In gastrointestinal endoscopy, this device is inserted through the mouth or anus. For other areas, small incisions are made.
How the test is performed Return to top
There are many types of endoscope, and they are named in relation to the organs or areas they explore. Endoscopes used to look directly at the ovaries, appendix, or other abdominal organs, for example, are called laparoscopes (laparoscopy).
Other endoscopes are inserted through incisions to look at joints (arthroscopy) or the lungs (bronchoscopy), and still others are used to view the inside of the bladder (cystoscopy).
Please see the following tests or procedures for more information on how the test will feel, the risks, why the test is performed, and normal and abnormal results:
How to prepare for the test Return to top
Before some types of endoscopy, such as an examination of the upper of the gastrointestinal tract, the you may be asked not to eat or drink before the exam. Before an examination of the lower gastrointestinal tract, the patient may also be asked to clear the colon of stool with enemas or laxatives.
Ask your health care provider about any special preparation before your endoscopy.
How the test will feel Return to top
During an endoscopy, the patient is sedated. With appropriate sedation, the patient should experience little if any discomfort.
Why the test is performed Return to top
An endoscopy may be performed for a variety of signs and symptoms, including bleeding, pain, difficulty swallowing, and a change in bowel habits. Exams of the colon may also be performed to screen for colon polyps and colon cancer.
Normal Values Return to top
The examination should reveal normal function and appearance of the area being examined. For example, with gastrointestinal endoscopy, the lining of the gastrointestinal tract should be smooth, with no atypical growths or lesions.
What abnormal results mean Return to top
A wide variety of abnormal findings may occur, and the physician will review them following the exam.
What the risks are Return to top
The major risks are pain, bleeding, or infection. For gastrointestinal endoscopy, there is also arisk of perforation (tearing) of the intestinal wall.
Reactions to the anesthesia may rarely occur, and for this reason your breathing, blood pressure, heart rate, and oxygen level will be monitored during the procedure.
Special considerations Return to top
Endoscopies also can be used to perform therapeutic procedures, including treatment of bleeding lesions and removal of colon polyps.
Update Date: 2/1/2003 Updated by: Jenifer K. Lehrer, M.D., Department of Gastroenterology, Graduate Hospital, Philadelphia, PA. Review provided by VeriMed Healthcare Network.
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Page last updated: 28 October 2004 |