Prostate Cancer signs ignored by Doctors.

Posted this in r/cancer but I'll probably find more information here.

I don't know if this is the right place to ask/share this, but my Dad informed me of some stuff this past weened and it's messing with my soul and I need to get it out:

My Dad(late 70's) has had no major health issues other than type 2 diabetes which is under control. He recently switched to a new doctor and went in for a physical and labs. His prostate PSA numbers came back as a 31(which from the Dr's reaction is extremely high) and the doctor told him he was about 97% sure it was prostate cancer. The doctor also said that while looking back at his past medical charts he noticed that these PSA numbers started to increase about 4-5 years ago. The PSA increases looked like this: 2018: 6 2019: 8 2021: 11 2022: 24 2024(currently):31

What is mind blowing is that the previous doctor NEVER mentioned anything about this. In over 4 years of seeing the same DR since my parents moved to my state, not once was is mentioned or brought up.
They did a biopsy procedure last week and he is scheduled to get the results late next week. The missed detection/diagnosis is obviously very concerning to hear because everything I've ever known and read has said the key to beating it is early detection, which is obviously not his situation. Is that still the case with Prostate Cancer? I know there's probably been SOME advances in treatment options in the past decade or so that maybe I am unaware of. I'm just trying to wrap my head around what to expect I guess.

**I did want to add that my Dad says he hasn't been experiencing any real symptoms other than a significant increase in urination frequency and urgency, and that has mostly been over the past year or so.