Oncotype DX testing and tumor size

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Houndmommy
Houndmommy Member Posts: 377
edited June 2014 in Stage I Breast Cancer
Oncotype DX testing and tumor size
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  • Houndmommy
    Houndmommy Member Posts: 377
    edited August 2010

    Does anyone know  - can all tumors (meeting the requirements for Oncotype testing, ie. st 1, ER+, etc.) be used for this test or is it possible for a tumor to be too small to test?  Also, do individuals with DCIS get the Oncotype test? 

    I'm asking because they tested my largest tumor (standard protocol) but what if my smaller tumors gave a higher score?  Also, my biggest tumor was DCIS but that isn't the one tested (at least I don't think it was).  My Pathology report was a disorganized mess (as far as I am concerned) and had holes in it. 

    Thanks, Kim

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  • KatherineNaomi
    KatherineNaomi Member Posts: 104
    edited August 2010

    I'm pretty sure I read that the tumor sample size needs to be at least 3mm in diameter. Also, the test is for early stage (ER+) invasive cancer so since DCIS isn't invasive it wouldn't be tested. Hope this helps!

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