EndoscopyBy Mayo Clinic staff Original Article:
http://www.mayoclinic.com/health/medical/IM04428 An endoscopy
procedure involves inserting a long, flexible tube (endoscope)
down your throat and into your esophagus. This test is usually
done under sedation. A tiny camera on the end of the endoscope
lets your doctor examine your esophagus, stomach and the
beginning of your small intestine (duodenum). A small tissue
sample (biopsy) is usually taken for analysis.