What dose regimen do you use when a women with inflammatory breast cancer is not responding to chemotherapy and needs radiation prior to surgery?

The data suggest pre op RT can convert some of these inoperable patients to surgery. I use comprehensive RT to preoperative dose of 50 Gy in 25 fractions in these patients

I agree with 50 Gy/25 fx. This won't interfere with the surgery or healing, and more could be added later if there is a concern about margins.