I'm Joe - recently finished the Varian Truebeam EBRT 20 fractions 60 gys in total - side effects not too bad.... little bit of additional peeing and some disruption with the bowel but 2 weeks after EBRT things seem to be settling down.
Had Bicalutimide for a month and then Decapeptyl 3mth and now am on the 6 mth injection.
I had the EBRT about 3-4 mths after starting the Bical tabs.
I have been told I may have to stay on the Hormones for 2 -3 years in total.
I understand the Hormone Decapeptyl disrupts the pituitary gland which in turn can stop the adrenal glands producing as much testosterone, so can help to control prostate cancer. Prostate cancer depends on testosterone to grow. So triptorelin/decapeptyl can shrink the cancer or slow its growth by limiting .
External beam radiation for prostate cancer kills cancer cells by destroying the genetic material that controls how cells grow and divide. Hopefully it gets them all?
I'm not understanding why I remain on Decapeptyl after EBRT - does the hormone treatment also limit cancer cell reproduction? And because of this they can die? Can someone enlighten me on the technicalities of after EBRT hormone treatment?