sheepguy said...
Well, it depends.My local RO in consultation with Roswell Park recommends the standard IGRT of 40 treatments but is willing to do hypofractionation if I insisted..he hasn't done it but sees nothing wrong with it other than lack of convincing data in his opinion. I 'm not sure that I would insist on it based on TA's opinion though. By the same token you might convince me. My Uro hates brachytherapy of any sort having seen a plethora of urinary strictures over the years no matter who does it. He's had patients from MSK, Cleveland Clinic and Mayo clinic have problems that he has to deal with...his patients could not go back to NY, Cleveland or chicago for emergency relief.
Oh man, where's the popcorn? This discussion always ends up rather contentious. Having argued this back and forth for myself 4 years ago, I'll just comment what I heard then.
Urinary strictures were the main BT side effect of concern noted by my RO back in 2013 at Vanderbilt, and were the main reason Vanderbilt's Cancer Center didn't favor the EBRT+BT concept. They didn't see enough benefit for the BT with today's 79.2+ Gy radiation dosing capability to be worth the side effect risk. Vanderbilt (in Nashville) is a regional referral center for urology, and are all too familiar with the problems of urinary strictures. They too have to do a lot of repair for that problem coming from other places that did BT.
EBRT+BT does seem to do a very good job indeed of oncological control based on multiple studies. There's really no arguing that. I'm even ok with calling it the "gold standard". At the same time, I don't know that it really means other methods aren't as good, or nearly so, with less side effect risk. Studies comparing EBRT vs EBRT+BT always have quirks that raise an eyebrow for me. Lots of selection games are possible with large data sets, and I'm skeptical of all studies due to the enormous commercial pressures in medicine.
Hypofractionation seems attractive. TA has posted study links that show that to be a good method, it's not just his opinion. 44 sessions is really a marathon, and if that could be reduced to 25 or less it would be great! Again, commercial pressures resist implementing cost reductions, though it seems that radiation suites will be fully booked either way. I know Vanderbilt's machines ran continuously morning to night, and cutting from 44 to 25 treatments would likely just mean they could treat more people. It's unlikely it would hurt their cash flow, since it's unlikely to result in idle time for their equipment!