An endoscope is a thin, flexible, lighted viewing instrument. It is
used during procedures to examine the inside of organs, canals, and cavities in
An endoscope may be inserted into a person's mouth and guided down
the throat to examine the esophagus, stomach, and upper end of the small
intestine. Different types of endoscopes can also be used to study the sinuses,
the colon, a woman's pelvic organs, and other parts of the body.