That's what I'm hoping for, too.

While it might be possible that oligometastatic prostate cancer can be cured sometimes, the medical field has no way to test that yet (they can't detect individual dormant cancer cells hiding in the bone marrow, waiting to wake up some day). That's probably why while some oncologists say that it might be curable, they're reluctant to pronounce that it's actually be "cured", and talk about patients with 10+ years "remission" instead.

I'd love it if there were a way to see if there's still any cancer in me. We attacked it *very* aggressively at the start: debulking surgery to the spine, post-surgery radiation to the metastasis site, a huge "curative" dose of radiation to the prostate itself, and almost 3½ years on ADT and Apalutamide. So it's theoretically possible that I'm cancer-free, but the risk right now is that if I stop my hormone treatment, some dormant cancer cells could wake up and start to divide, and even worse, evolve castrate resistance to that they don't respond to the hormone treatments any more.

I dream that in 5 years or so I'll be in an appointment and my oncologist will say "There's a new test you can try ..." But until then (or until my PSA becomes detectable again), it's basically a case of Schrodinger's Cancer.