I admit I had a few butterflies in my stomach when in the waiting room, like a student preparing himself for the coming test, or like job seekers for meeting their interviewers.   I guess it was kind of natural reaction to an unprecedented personal experience, like taking a endoscopy this yesterday.

Finally it was my turn.  A nurse led me to a changing room and gave me a poncho-like robe to wear on, then she led me to the physician for some questions like: "Do you have bad habits, smoking? drinking?", "Have you ever received a surgery?", "Are you allergic to some medicines?", and so on; meanwhile, as I was busy answering the questions, she "stealthily" injected something into a vein of my right arm( later I knew it was anesthetic). 

After the inquiries, I was brought to a bed surrounded by curtains and was instructed to lie on my back.  Again some questions were asked.  No sooner had I been ordered to turn around to one side than I was passed out, totally unaware of whatd happened next.  When I regained my consciousness, I found there was only one nurse left, busily cleaning things up.  So the checkup was done. 

Not yet.  Then I was led to the physicians again.  He explained to me what is "polyp" as he showed me the images of my large intestines or colon, whatever.  He said most of the polyps are benign ones, and no matter they are benign or malignant, they can be cut off during the process of endoscopy.  However, he emphasized, dont leave them there in your body unchecked.