@robertov
I have not head about increase in any radiation issues with hips. I do think it is possible as most treatments go in from the both side by hips.

I do know I got what looks like a sun burn on both sides from the radiation entry. It was not bad kind of line a light sunburn that then turned to tan mark. About the size of my fist. My R/O did say common to get the marks.

I can send a message (and will make a note now and asked about it. I had pencil beam proton radiation because I have a ICD/Pacemaker and they wanted a more precise beam. They also use a scatter beam but did not have that so no familiar with it.

Will let you know what R/O says about hip issues from proton radiation. I do know that is where my beam went in on both sides. Not sure if that is the entry for all prostate proton beam treatments but anohter question for R/O.