Bob,
Sounds like MSKCC is taking a methodical approach to this. I think, whether he said it or you misunderstood him, most of us were questioning the PA guy. Sometimes we push for additional opinions because we want you to come to what we believe your correct choice would be. We may not be correct but I'll tell you this. There have been quite a few "re-appearances" around here lately and we all worry.
The board is getting to an age where quite a few of the early members are at that critical time in the journey. We are starting to see problems for long time members and we all worry about the choices of others. I'm sure you will be well guided by MSKCC.
Glenn