Endoscopy is the direct visualisation of the digestive tract using an endoscope, a flexible tube with a camera mounted on it that is small enough to pass into cavities in the body such as the stomach, colon, lungs and oesophagus.
For years, this seemingly safe procedure has been fraught with risks, causing problems such as perforation of the wall of the oesophagus, stomach or duodenum (the first section of the small intestine), infections and adverse reactions to anaesthetics. In some cases, the procedure has even led to death.
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