Bicalutamide / Enzalutamide / Abiraterone / and the more invasive Docetaxel try to chemically inhibit further division and growth of metasttic cancer cells but do not roll back entrenched cancer tissue, which in the case of pelvic and vertebrae metastasis threaten to impinge on spinal chord nerve fibres causing terminal disaster.
Radiotherapy employing a focused beam of high-energy X-rays can zap with pinpoint accuracy the cancer tissye identified by MRI -- provide the patient does not move during irradiation.
See : https://www.google.co.uk/search?q=radiotherapy+and+collateral+damage+to+non-cancerous+body+tissues&sca_esv=558074753&sxsrf=AB5stBhCXehOWLDZ2q3hz4TfrPhk829gAg%3A1692352538278&source=hp&ei=GkDfZLD2DvaahbIPsJ2A8Ak&iflsig=AD69kcEAAAAAZN9OKg6aQmab_nFlQJ82hz9zK3Pv7Rgd&oq=&gs_lp=Egdnd3Mtd2l6IgAqAggCMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnMgcQIxjqAhgnSMInUABYAHABeACQAQCYAQCgAQCqAQC4AQHIAQCoAgo&sclient=gws-wiz
"Radiation therapy kills cancer cells that are dividing, but it also affects dividing cells of normal tissues. The damage to normal cells causes unwanted side effects. Radiation therapy is always a balance between destroying the cancer cells and minimizing damage to the normal cells."
Alarming is the known fact that effects of collateral damage continue to come in months, years and decades after damage. I have consented to radiotherapy on pelvic/spine area as mine is a choice between the Devil and the Deep Blue Sea. Luckily for me radiotherapy does not fall in the neck/head area.
I believe in London radiotherapy is offered only at Ch. X. Maybe i shall urge my surgeon to limit first-time irradiation to the minimum degree necessary. Firsthand experience willl be much appreciated -- if preferred via private message.