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Would you offer PMRT for a small focus of invasive disease in a background of extensive DCIS?

Would postmastectomy radiotherapy ever be indicated in a young patient with close margins and a massive (14 cm) DCIS breast tumor interspersed with less than 2 cm of invasive cancer?
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Would postmastectomy radiotherapy ever be indicated in a young patient with close margins and a massive (14 cm) DCIS breast tumor interspersed with less than 2 cm of invasive cancer?

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1 Answer
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Radiation Oncology · Varian Medical Systems/Allegheny health network
Answered on

I am assuming node negative with SNLN.

Normally I don’t treat but would like to know the grade of cancer along with how many margins are close (how close defined in mm) and if close disease focal or diffused at the margin. If all the above are unfavorable then would consider chest wall RT.

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