Yes, an EGD is a type of endoscopy. The two terms are closely related but not perfectly interchangeable. EGD stands for esophagogastroduodenoscopy, which is the specific endoscopy procedure that examines the upper digestive tract. When most people say “endoscopy” without any qualifier, they usually mean an EGD. But “endoscopy” is actually a broader category that includes any procedure using a flexible camera to look inside the body, including colonoscopies, bronchoscopies, and others.
How EGD Fits Under the Endoscopy Umbrella
Think of “endoscopy” as the general term and “EGD” as the specific one. An EGD examines three structures in your upper digestive system: the esophagus (the tube connecting your throat to your stomach), the stomach itself, and the duodenum (the first section of your small intestine). The name is literally a mashup of those three body parts: esophago-gastro-duodenoscopy.
Other procedures that also count as endoscopies include colonoscopy (which looks at your colon), sigmoidoscopy (which examines just the lower portion of the colon), and bronchoscopy (which looks at your airways). So if your doctor says “endoscopy,” it’s worth clarifying which type they mean, though in most gastroenterology settings, “endoscopy” and “upper endoscopy” and “EGD” all refer to the same procedure.
Why Doctors Order an EGD
An EGD gives your doctor a direct, real-time view of the lining of your upper digestive tract, which makes it more accurate than X-rays for spotting problems. It’s typically ordered when you have unexplained symptoms like persistent heartburn, difficulty swallowing, abdominal pain, nausea and vomiting, unexplained weight loss, or vomiting blood. Unexplained anemia can also prompt an EGD, since it may indicate slow bleeding somewhere in the upper gut.
The conditions it can diagnose are wide-ranging: GERD, stomach ulcers, inflammation of the esophagus or stomach lining, celiac disease, Crohn’s disease, Barrett’s esophagus, hiatal hernia, and both cancerous and noncancerous tumors. It can also detect signs of liver cirrhosis and portal hypertension by revealing swollen veins in the esophagus.
What Happens During the Procedure
During an EGD, a thin, flexible tube with a camera and light on the end is passed through your mouth, down your throat, and into your stomach and duodenum. You’ll be sedated, so most people don’t remember the procedure at all. The whole thing typically takes 15 to 30 minutes.
Beyond just looking, the doctor can take action during the same procedure. They can collect small tissue samples (biopsies) to test for infections, celiac disease, or cancer. They can widen a narrowed esophagus, burn a bleeding vessel to stop active bleeding, remove polyps, or even extract a foreign object that’s been swallowed. This ability to diagnose and treat in a single session is one of the main advantages of an EGD over imaging tests.
Preparation and Fasting
Your stomach needs to be empty for the camera to get a clear view and to reduce the risk of complications. You’ll be asked to stop eating solid food at least 6 to 8 hours before the procedure, and clear liquids are usually cut off 2 to 4 hours beforehand. Your doctor’s office will give you specific timing based on when your procedure is scheduled.
You may also need to temporarily stop certain medications, particularly blood thinners or supplements that affect clotting. Your doctor will tell you which ones to pause and when.
Recovery and Getting Back to Normal
After the procedure, you’ll spend some time in a recovery area while the sedation wears off. Most people feel groggy and slightly out of it for a few hours. You won’t be allowed to drive yourself home, so plan to have someone with you.
Stanford Health Care recommends avoiding work, strenuous exercise, driving, and signing legal documents for a full 24 hours after the procedure. A mild sore throat is common for a day or two. Most people can eat normally within a few hours, starting with soft foods and working up from there. If biopsies were taken, results usually come back within a few days to a week.
Risks Are Low but Real
EGD is considered a very safe procedure. Serious complications like perforation (a small tear in the digestive tract wall) or significant bleeding are rare. Complication rates for endoscopic procedures in general fall well below 1%, and the risk of a fatal complication is roughly 1 in 14,000. Your risk is lower when the procedure is performed by an experienced provider who does a high volume of endoscopies. Patients treated by lower-volume practitioners have up to three times the odds of complications like bleeding or perforation compared to those treated by the most experienced endoscopists.
Minor side effects are more common and include bloating, mild cramping, or that sore throat from the tube passing through. These resolve on their own within a day or two.