Are there any bladder constraints for preoperative short course rectal RT?

Topics: Radiation Oncology • Gastrointestinal Cancers

RAPIDO and Myerson paper don’t mention any and it looks like T4 patients were treated, presumably covering external iliacs which would likely have given a significant dose to bladder?

Answer from: Radiation Oncologist at Academic Institution

While I appreciate thoughts on constraints by Fields et al., PMID 31673654 (14 patients), or even our paper from Myerson et al., PMID 24606849 (76 patients), I think these are superseded by the higher level of evidence from the RAPIDO study (462 patients w/ SCRT).The RAPIDO study (appendix...

Comments

Radiation Oncologist at Lake Huron Medical Center
Very reasonable. In your paper, you do note the SI...

Radiation Oncologist at Henry Ford Health System
Nope. I no longer follow that initial experience i...

Radiation Oncologist at Lake Huron Medical Center
I agree that the RAPIDO data is compelling and 4 f...

Radiation Oncologist at Henry Ford Health System
It's important for everyone to remember that a 3 o...

Answer from: Radiation Oncologist at Community Practice

@Emma C. Fields has a study for VMAT/IMRT for short course rectal and I use these constraints:PTV>98% dose to >93% volume<10% getting >105%<5% getting >110%Max dose of 115%Bowel 19.5 Gy to <180 mL22.2 Gy to <100 mL25 Gy to <65 mLMax dose of 27.8 GyFemoral heads22.2 Gy...

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