Esophagogastroduodenoscopy

EGD combines a flexible video endoscope with a camera that transmits magnified images from the upper gastrointestinal tract. Its working channels also allow clinicians to collect tissue or fluid and pass therapeutic instruments. This integration links visual assessment with sampling and intervention during one examination, helping clinicians investigate abnormalities and act on selected findings.

A biopsy adds tissue-level information to the visual findings seen during the examination. Clinicians can obtain tissue through the endoscope’s channel when an abnormal area requires further evaluation. The resulting biopsy findings can guide diagnosis and treatment, making sampling especially important when direct appearance alone does not provide enough information.

The endoscope can do more than document disease because its channels permit the passage of therapeutic instruments. When clinicians identify selected lesions or an area of upper gastrointestinal bleeding, they may use the procedure to remove the lesion or support hemostasis. This combines evaluation and immediate treatment within the same clinical examination.

Once sedation has been administered, the flexible endoscope is guided through the mouth and advanced through the esophagus, stomach, and duodenum. The camera provides magnified views as the instrument moves through these regions, while built-in channels make it possible to obtain tissue or fluid samples and introduce selected therapeutic instruments when needed.

Clinicians may use EGD to evaluate dysphagia, persistent vomiting, or unexplained upper gastrointestinal bleeding. These symptoms can prompt direct examination of the relevant tract, allowing clinicians to look for abnormalities such as inflammation, ulcers, strictures, tumors, or other lesions. Findings from the examination and any biopsy can then support diagnostic and treatment decisions.

For unexplained upper gastrointestinal bleeding, EGD provides direct visualization of the esophagus, stomach, and duodenum to identify abnormalities associated with the bleeding. Its therapeutic channels may also support hemostasis when appropriate. Consequently, the procedure can supply both information about the source of the problem and an opportunity for selected intervention during the examination.