The fact that half of your cores, that they sampled, had a 3+4 means you need to do something. Active surveillance is not for you when you have that many positives. You could go a couple of months on active surveillance, but your cancer will almost definitely get worse, waiting frequently results in a higher Gleason scores and a more aggressive cancer.
You want to get a decipher score? Talk to your doctor and tell him that’s what you’d like to get. That will give you another idea about how aggressive your cancer could be and how quickly it could metastasize. That would be a major factor in any decision to go on active surveillance.
Get a second opinion on that PSMA pet scan. You don’t want to just have one doctor’s opinion saying there may be something on the test that the other doctor didn’t see. PSMA pet tests are hard to read so you want an Expert looking at your pet scan.
The treatments the doctor recommended could be good options, You need to speak to a radiation oncologist about those choices, There are other treatments that don’t require radiation, the other options to look into are HIFU, cryotherapy, and TULSA-PRO, they are three non-radiation options.
I have been to two urologist and two oncologist first urologist I went to for a year I just didn't like him so I changed second urologist said I can do active surveillance. Two oncologist I went to. First one never had all the results at that time I saw him he suggested I get the psma PET scan because of the other scans showed nothing. second oncologist . He said I can go on active surveillance yesterday till next year October November without any problem. Reiterated that he felt there was very little grade 4 involved. But he suggested to rethink that in October decipher score is 0.41 which is low but almost intermediate intermediate I believe is 0.45 and below is considered low.