ENDOSCOPY is using a long flexible fibreoptoscope to examine inside body tubes- most frequently the esophagous and stomach.
We use this technique for FISH HOOK REMOVALS - a particular problem with over zealous "fisherdogs".But also examination for foreign bodies eg swallowed bones , plastic and there subsequent removal where possible .
It is also helpful in diagnosing stomach and esophageal lumps, colonic polyps, stomach ulcers