T3c here. I am most fortunate to live in a place where there are lots of very wealthy people so we have a top - notch medical system. When I was diagnosed I got the very best of cutting - edge therapy and current medical thought on dealing with PCa.
My first PSA blood test was
2 weeks after DaVinci RP. It was 0.2 so I flunked that test. The number
should have been below 0.02 (undetectable) so my surgeon immediately put me on Firmagon ADT (there is no testosterone flare with that chem) as there were some "microscopic pieces of the cancer" left behind after the operation that were generating that PSA. I then went on with 2 years and 4 months of ADT (Lupron, then Eligard after 3 mo of Firmagon), which has kept my T around 2.5 ng/dl and my PSA "undetectable" at less than 0.02 ng/dl.
After 3 months of chemo I went in for 40 sessions of external beam radiation therapy.
Why?
My understanding is this: acinar adenocarcinoma stem cells live for about
3 years. The primary tumour has a bunch of those so they remove them 'as best' they can with surgery. PCa stem cells have 2 forms, a round stationary type that just sits, eats, gets bigger until it splits into 2 daughter cells, and a long stringy type that can move around forming transient attachments to surrounding tissues, push other cells aside, insert itself into blood vessels or other organs, travel to distant parts of the body, put down roots and change to the first type of stem cell. The second type cannot undergo mitosis to reproduce, it must change to the first type of stem cell to do that. The first type of cancer stem cell is like a beach ball and the second is like an amoeba. Both types of stem cell can change to the other type BUT they
must have testosterone to do that. Take away the T and they cannot grow, move or reproduce.
After 3 months of ADT I got external beam radiation therapy. That raises the level of oxidants in all of the cells that get irradiated. The cellular bodies that neutralize oxidants and remove them from the cell so that they do not injure or kill it are called
mitochondria. The more advanced a PCa cancer cell is on the Gleason scale, the fewer functional mitochondria the cell has to deal with those antioxidants, stem cells inclusive. The point is to assure that any live PCa cells have been sorely stressed sufficient to - if not kill them outright - to injure them sufficient to very much shorten their life span.
The progression made sense to me for my situation, starting with the logic of that first blood test 2 weeks after surgery.
Of course, as always, your mileage may vary.