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

Assume SSD at isocenter is correct.
When are you concerned about the dose to PTV or OARs?
Article below appears to say minor effect. 

Zhang et al., PMID 33982618



Answer from: Radiation Oncologist at Community Practice
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Radiation Oncologist at Rutgers Cancer Institute of New Jersey
We usually replan if the difference in body contou...
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Answer from: Radiation Oncologist at Academic Institution

Answer from: Radiation Oncologist at Community Practice

Answer from: Radiation Oncologist at Community Practice