Hi pokergirl -
Of course you are scared and concerned, and of course your boyfriend is already tired of being poked and prodded. There is not one part of this that is fun! Try not to be too stressed out (I know, easier said than done!) - this is not completely abnormal and does not necessarily indicate that they think something worse is wrong.
There are several reasons they may be doing a second biopsy. One reason for a second biopsy would be if they saw something "light up" in the PET scan - for instance, a spot on the liver or lungs. But since you are already fairly sure those areas are okay and that does not seem to be what they are doing the biopsy on, that is probably out.
You said they are doing it on the same tumor - are you absolutely sure? I would confirm that they are doing the biopsy on the same tumor. That is a little bit out of the ordinary, but there are still plenty of good reasons they might be doing it. One is that they may have lost or accidentally destroyed the first one and don't want to tell you - but that is fairly unlikely so I wouldn't assume that is what happened.
I think that it is more likely that the doctors:
1) are looking for a larger sample than they got the first time (which may be especially true if they need to send out part of the tumor for various types of testing - for instance, for genetic testing or for microsatellite instability testing, which is a type of DNA change that may indicate genetic factors)
2) simply want to reconfirm the original pathology
3) want to biopsy a different part of the tumor, especially if it is large or "spread out" over the rectum
4) saw another "spot" on the PET scan that may indicate the tumor was more spread out than they originally thought - the tumor may be kind of "spread out" over the inside of the rectum and they want to make sure they have the exact area marked prior to surgery so that they are sure to get clean margins around the tumor
There are probably other possible reasons that I can't even think of. If your boyfriend doesn't want to talk about it (which many, many patients don't want to do at this point), don't be afraid to take the doctor aside and ask "What are you doing the biopsy on? Exactly why do you feel that you need to do a second biopsy? Exactly what are you looking for in the second biopsy?" If you can (and it is your boyfriend's right to do this) get a COPY of the original pathology report from the first biopsy, and continue to get copies of absolutely everything else from here on out. Every doctor and hospital has a bit of a different procedure for getting copies (some make it hard, some much more easy) but you can get them if you are persistent.
One note about his call to the doctor's office - if the nurse "doesn't have the pathology report in front of her" you can politely tell her that you would be very happy to wait on the phone so that she can go and get it, since the information is extremely important. This is your boyfriend's health and it is part of her job, so don't let her blow you off.
Lastly - I would recommend a book called "What Your Doctor May Not Tell You About Colorectal Cancer" by Dr. Mark Pochapin. He is an amazing person and a phenominal physician, and it is a very informative and readable book. You can buy it new ($17.91) or used (starting at $2.10) at Amazon:
http://www.amazon.com/What-Doctor-About ... 044653188X. This is a great book for you to read, and for your boyfriend to read if he wants to - gives a great overview of lots of issues, medical information, etc.
Be sure and let us know how tomorrow goes.
Hannah
Hannah K. Vogler
Co-Founder, The Colon Club
cousin of Amanda Sherwood Roberts
dx 1/99 Stage III at age 24
died January 1, 2002 at age 27