Let's begin by discussing what "endoscopy" is. Endoscopy is made up of "endon" which means inside (in Greek) and "scopein" which means watch (in Greek). Modern-day endoscopy involves the use of endoscopes (long tubes) attached to a processor/computer. The endoscopes can have various channels to allow light, air, water, and instruments to pass in and out. These instruments can be inserted into many parts of the body including the nose, mouth, trachea, urethra, and rectum. Endo