What margins (CTV and PTV) do you use for boosting breast lumpectomy cavity?
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1 Answers
Mednet Member
Radiation Oncology · Michigan Healthcare Professionals, PC
RTOG says:
- Contour seroma/architectural distortion/relevant clips/lump scar as GTV.
- Add 1cm expansion for CTV, posteriorly carve til anterior to pec major and don't cross midline; pull into skin 5mm.
- Add 0.7cm expansion for PTV but exclude heart.
- Then create PTVeval - pull PTV into skin 5mm, don't ...