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For adjuvant radiation decision making purposes, how is the "Lower Uterine Segment" (LUS) defined?

Is this a clinical/radiographic or strictly pathologic diagnosis? Specifically, what is considered the superior/top border of LUS?
1 Answer
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Radiation Oncology · Varian Medical Systems/Allegheny health network
Answered on

We have always used the pathologist's description of LUS (fundus, body, LUS, and cervix). That being said, I don’t use LUS as risk factor for deciding adjuvant treatment except in borderline cases where may lean towards brachytherapy if otherwise a candidate for observation.

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