hey T., yes that would be very scarey- especially going into it not knowing a whole lot about it. I would definately pursue more information if you are uneasy about having this done. To me, it is your dr.s job to give you all information, pro/cons, of this entire procedure and explain it until you are fully aware of whats going on at a level YOU are comfortable with. I have found sometimes you have to push back on these dr.s to get all the information.
the only real "suggestion" I have is to ck out webmd.com this is a site I have gone to pretty often with healh questions.
take care and god bless,
J.