Had a PET scan on 11/5/2012.   I have a new Oncologist at the very highly overworked VA center in Albuquerque.  They lost 2 of 3 oncologists to the University last year.  I am cautiously optimistic about my current oncologist.  In this last test, there is a very slight increase in size of a couple of lymph nodes, maybe 1 millimeter and a very low "lit-up"reading.  These lymph nodes are in a difficult location in my abdomen, near a major blood vessel, to do a needle biopsy. The doc has ordered a follow-up PET scan in Feb 2013. The long term danger is that NLPHL may evolve into a different kind of lymphoma.   I'm not in panic mode because NLPHL is very indolent and reasonably treatable with follow-up Rituximab treatments.  So far, I am in complete remission for 3 years as of the end if 2012 !!!