OGDS is a procedure of inserting an endoscope,
which is a thin flexible tube that has a small video
camera through the mouth, to look at the top of the
airway all the way to the intestines.
COLONOSCOPY is a procedure to detect abnormalities
in the large intestine and the distal part of the small intestine.
A long flexible tube with a small video camera at the end is
inserted through the large intestine.