Hi everyone,
I (25m) didn't realize how active this community was until recently! I was wondering if some people can help clear the air with what I'm seeing in my Dad (64).
Last August (2019) my Dad was diagnosed with Stage 4 prostate cancer with bone metastases and a PSA level of 433 (Gleason score: 9). In early September 2019 he went on Leuprorelin and started taking Apalutamide daily. An appointment in October 2019 revealed the therapy was working and that my Dad's PSA levels dropped from 433 => 44! Great! His PSA levels every month following October were lower than the previous, which gave him and the family a lot of hope. Because my Dad's continued to decrease after each visit, his doctors thought it was be best to checkin with him every 2 months (starting after his March 2020 appointment). The lowest we saw his PSA levels was .14 (compared to his original 433).
Well, come May 2020, my Dad's PSA levels went up from .14 to .33. Alright. Not so bad, I think? I chalked it up to a PSA bounce as rarely do men with advanced prostate cancer stay at a PSA level of 0, or close to it. The doctor wasn't at all alarmed and just suggested more waiting. My Dad got an MRI scan earlier this month (August) to compare what his body looked like before the hormone therapy - apparently my Dad is doing 'remarkably' well in the sense that the cancer is shrinking/not growing and the bones are starting to repair themselves! This was great news, but we just found out today that his PSA level went up from .33 (in March) to 1.8 just today (the appointment was done over a phone call)... he's absolutely devastated, as he thinks his cancer is already resisting the treatment.
I understand not everyone here are medical professionals, but based on those who may have personally experienced or witnessed this PSA growth before, is it bad? I assumed it would give him 2 - 3 years of peace before we switch treatment plans, but I'm worried that window might be closing (if it hasn't already). His next appointment is late October, but I can't stop thinking about what that would look like for my Dad.
I also understand that it isn't necessarily the end of the world, as chemo/radiation are still options, but I'm wondering if the aforementioned spikes in my Dad's PSA is indicative of his cancer being/becoming castration-resistant? Or is this just his cancer rising a bit before it stabilizes again?
My Dad's doctor says there's no need for alarm, but I can't help but worry. I'm also confused about my Dad's MRI results and his rising PSA levels; if his MRI scan was super positive, why is his PSA level going up?
I appreciate any and all help!