When do you consider replanning patient if body contour is off on CBCT but PTV is aligned to prostate?

When reviewing the CBCT for a prostate case, I first look at the PTV. I make adjustments as necessary. Then, I look at the rectum. If anteriorly, it approximates what it looked like at simulation, I proceed with treatment. If it appears substantially off, I may consider having the patient come down ...

Not a GU specialist but we frequently encounter this issue in H&N where body contour changes are more pronounced due to weight loss. If there is any question, run a verification plan using the existing plan with new body contour from CBCT. Dosi can density override such that any contour gain becomes...

I agree with Dr. @Dr. First Last. I haven't come across a case yet where I have replanned a prostate cancer patient due to changes in body habitus, but that is because they generally maintain a stable weight. I have done so for a number of other cancer types. I do look when I review each CBCT becaus...

Thank you everyone for your input and expertise. This was the first prostate patient I have had to replan due to body change. The patient started developing covid-like symptoms the day we were to start him. His treatment ended up being delayed and interestingly enough, he decided to get in shape for...