In endoscopy, a device (endoscope) that is equipped by a light and a camera source in one end is inserted through one of the body’s natural openings and organs with lumens are examined.
Although there are variations in names of the endoscopic procedures, the technique is identical: Esophagogastroduodenoscopy refers to endoscopic examination of the esophagus, stomach and duodenum using an endoscope. Colonoscopy refers to endoscopic examination of the colon.
Similarly, sigmoidoscopy and rectoscopy imply endoscopic examination of the sigmoid colon-a part of the colon-and rectum, respectively.
Endoscopic retrograde cholangiopancreatography-a valuable procedure for diagnosis and treatment of hepatic, bile duct and pancreatic diseases-, is a diagnostic tool that integrates an endoscopic procedure with X-ray imaging.