Definition of Endoscopy:

Endoscopy is a way of looking inside the body using a flexible tube that has a small camera on the end of it. This instrument is called an endoscope.

How the test is performed:

There are many types of endoscopes. Each one is named according to the organs or areas they are used to examine.

For example:

• Arthroscope: Used to look directly in the joints
• Bronchoscope: Used to look in the airways and lungs
• Cystoscope: Used to view the inside of the bladder
• Laparoscope: Used to look directly at the ovaries, appendix, or other abdominal organs

An endoscope is passed through a natural body opening or small cut. For example, a laparoscope is inserted through small surgical cuts in the pelvic or belly area. In men, a urinary tract endoscope is passed through the opening of the urethra.

A gastrointestinal endoscope may be inserted through the mouth or anus. An ultrasound probe can be added to a gastrointestinal endoscope. This is called an endoscopic ultrasound. Depending on the area of interest, this device can also be passed through the mouth or anus.

Small instruments can be inserted through an endoscope and used to take samples of suspicious tissues.

This article offers a general overview on endoscopy. For more information, see the specific procedure:

• Anoscopy
• Bronchoscopy
• Colonoscopy
• Cystoscopy
• EGD (esophagogastroduodenoscopy)
• Enteroscopy
• Endoscopic retrograde cholangiopancreatography (ERCP)
• Laparoscopy
• Sigmoidoscopy

How to prepare for the test:

Ask your health care provider if you need to do anything to prepare for your endoscopy. You may be asked not to eat or drink before most types of endoscopy. Before an examination of the lower gastrointestinal tract, you may be asked to use enemas or laxatives to clear out the large intestine.

How the test will feel:

You may be given medicine to help you relax and possibly fall asleep. This is called sedation. With the right sedation, you should have little, if any, discomfort.

Sedation is usually not given to people having an endoscopic ultrasound of the rectum. The endoscope will make you feel like you need to move the bowels (pass stool), but it should not cause any pain.

Why the test is performed:

There are many different reasons to perform an endoscopy. For example, your doctor may order an endoscope if you have bleeding, pain, difficulty swallowing, and a change in bowel habits. Colonoscopy can also be done to screen for colon polyps and colon cancer.

For more information, see the specific article:

• Anoscopy
• Bronchoscopy
• Colonoscopy
• Cystoscopy
• Esophagogastroduodenoscopy (EGD)
• Enteroscopy
• Endoscopic retrograde cholangiopancreatography (ERCP)
• Laparoscopy
• Sigmoidoscopy