What lung constraints do you use for early stage breast hypofractionation?

The rationale for monitoring/constraining the ipsilateral lung is to avoid symptomatic radiation pneumonitis. That being said, I don't know if I have ever seen it in a patient where we are not treating nodes.

Our official scorecard for whole breast conventional fractionation (40-42.56 Gy/15-16 fx) st...

We have chosen to follow the constraints from RTOG 10-05 (Accelerated WBRT w/ concurrent boost vs Standard WBRT w/ sequential boost).

VGy16 15% (acceptable deviation 20%); V8Gy 35%, V4Gy 50% for breast alone.

30%; 45%; 60% for comprehensive.

And, like Dr. @Dr. First Last, have had very few cases whe...