Endoscopy is a common test used when a hiatal hernia is suspected or needs closer evaluation. It allows a doctor to examine the inside of the esophagus and the lining of the stomach using a thin, flexible tube with a light and camera on the end. This gives a direct view of the areas that may be affected by the hernia.

A hiatal hernia happens when part of the stomach pushes upward through the diaphragm into the chest area. Because this can affect the lower esophagus and upper stomach, an endoscopy helps reveal irritation, inflammation, ulcers, narrowing, or other changes in the tissue. It can also show whether acid reflux has caused damage over time.

During the procedure, the endoscope is gently passed through the mouth and down into the digestive tract. The camera sends images to a screen so the doctor can inspect the lining in detail. In some cases, small tissue samples may also be taken for testing if anything unusual is seen.

This procedure is important because it does more than confirm the presence of a hiatal hernia. It also helps identify complications and rule out other conditions that can cause similar symptoms, such as swallowing problems, chest discomfort, or persistent heartburn. By showing the actual condition of the esophagus and stomach lining, endoscopy gives valuable information for diagnosis and treatment planning.