My friend is in his early 70s and he is Gleason 3+4=7 and has been on active surveillance for some years (must ask him exactly how long). He has seen the finest consultants money can buy, and two advised surgery, two advised active surveillance, and one radiotherapy.
He even visited the prostate clinic in Offenbach Germany, where they are famous for the Nano-Knife procedure. He decided on AS, and he now has quarterly PSA tests, annual MRIs and an annual consultation with his favourite specialist. He is doing great on it, but AS with G3+4=7 is a gamble, as is life!
If I were you, I would ask for a template biopsy to give you a more accurate picture of the state of your tumour, and then, armed with the result, check with your doctors to see if AS is appropriate for the time being, and follow a similar regime to my friend’s above.
Best of luck.