Had a bone scan, a cystoscopy, and met with the MO this week, and things are massively improved from where they were six months ago. The bone scan is almost normal, with only a few warm spots that mostly correspond to where I still have some lingering pain. The MO was extremely happy, and said the scan doesn't differentiate between cancer activity and bone healing. Blood work has been normal with PSA steady at 0.02. They cystoscopy was clear so no recurrence of bladder cancer at this time (the uro said "cured" three months ago).
After seeing the bone scan, I tentatively asked if this could be described as a partial remission. The MO looked at my PSA and suggested "complete biochemical remission". In either case, I've had a fantastic response to treatment so far. Next up is to get started on Zytiga, then get on with living my new normal life.
There's a few other relatively niggling issues to be dealt with, such as dealing with a root canal that got reinfected while my immune system was offline during chemo. The GP did take pity on me and recommended ColoGuard instead of a colonoscopy. So I get to poop in a box and hope it doesn't indicate a third cancer.
I just started Atorvastatin and am attempting to add Celecoxib (or rather, the GP is attempting to get the insurance company to pay for it), as I do have high cholesterol and both drugs are rumored to have synergistic effects against the cancer.
At the moment, I'm a little uneasy about not having any soft tissue scans to get an update and new baseline on the primary tumor, lymph node, and lungs, but on the other hand it probably wouldn't affect the treatment plan at the moment.
So in summary blood work is just about perfect, scan is much improved, and symptoms are fading. It's time to celebrate for a while, then decide how much effort I want to put into seeking out second opinions and looking for tiny metastases with more sensitive scans. My fantasy is that this could be reduced to oligometastatic disease and the tumors attacked individually.