My dad is waiting for prostate cancer diagnosis (biopsy on weds). His prostate is huge (160g) and is causing significant symptoms (lots of blood and clots and needs catheter). I see Alpha reductase inhibitors can be used to shrink the prostate in benign prostate enlargements. Does anyone have experience of them being used in cancerous cases? They don't want to operate on my dad as he has heart complications so I'm concerned about what other options there are to shrink the prostate. And given the symptoms it would be helpful to act fast to stop it growing further. Thanks