DOES EVERYONE HAVE TO HAVE A ENDOSCOPY?

I WAS WONDERING IF EVERYONE HAD TO HAVE AN ENDOSCOPY, OR IS IT JUST FOR PATIENTS HAVE A LAP SURGERY. WHAT EXACTLY IS IT ANYWAY? JUST WONDERING.

We greatly appreciate your interest in helping us build our Q&A database. To discourage vandals from posting garbage, however, we require people to register before posting.