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Breast Cancer • Radiation Oncology
Is superficial underdosing of hypofractionated breast RT acceptable in patients with a large breast separation?
When trying to eliminate dose heterogeneity during field in field planning for hypofractionated breast radiation with a large separation, the resulting plan may have the prescription isodose line fall ~5mm deep to the skin surface, is this superficial underdosing acceptable?
Answer from: Radiation Oncologist at Community Practice
The 3D dose distribution and DVHs should be carefully reviewed for target volume coverage, particularly if the lumpectomy bed PTV is superficial. The most important consideration is adequate coverage (>/=95%) of the tissue included in the region of the lumpectomy bed PTV. Whole breast ...
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