Upper endoscopy

An upper endoscopy, also called an upper gastrointestinal endoscopy, is a procedure used to visually examine your upper digestive system. This is done with the help of a tiny camera on the end of a long, flexible tube. A specialist in diseases of the digestive system (gastroenterologist) uses an endoscopy to diagnose and sometimes treat conditions that affect the upper part of the digestive system.

The medical term for an upper endoscopy is esophagogastroduodenoscopy. You may have an upper endoscopy done in your health care provider's office, an outpatient surgery center or a hospital.

Why it's done

Gastrointestinal tractEnlarge image

An upper endoscopy is used to diagnose and sometimes treat conditions that affect the upper part of the digestive system. The upper digestive system includes the esophagus, stomach and beginning of the small intestine (duodenum).

Your provider may recommend an endoscopy procedure to:

• Investigate symptoms. An endoscopy can help determine what's causing digestive signs and symptoms, such as heartburn, nausea, vomiting, abdominal pain, difficulty swallowing and gastrointestinal bleeding.
• Diagnose. An endoscopy offers an opportunity to collect tissue samples (biopsy) to test for diseases and conditions that may be causing anemia, bleeding, inflammation or diarrhea. It can also detect some cancers of the upper digestive system.
• Treat. Special tools can be passed through the endoscope to treat problems in your digestive system. For example, an endoscopy can be used to burn a bleeding vessel to stop bleeding, widen a narrow esophagus, clip off a polyp or remove a foreign object.

An endoscopy is sometimes combined with other procedures, such as an ultrasound. An ultrasound probe may be attached to the endoscope to create images of the wall of your esophagus or stomach. An endoscopic ultrasound may also help create images of hard-to-reach organs, such as your pancreas. Newer endoscopes use high-definition video to provide clearer images.

Many endoscopes are used with technology called narrow band imaging. Narrow band imaging uses special light to help better detect precancerous conditions, such as Barrett's esophagus.