How would you approach a patient with T1aN1 breast cancer when the ER/PR/HER2 status cannot be determined by IHC?
T1a - 2mm; N1 - 1 ipsilateral lymph node measured 6mm
Oncotype says too small to test and NGS says too few cancer cells to determine status.
1 Answer
Mednet MemberInvited Expert
Medical Oncology · H Lee Moffitt Cancer Center, University of South Florida
Answered on
This situation is unusual. Was the 2mm on the diagnostic biopsy and no other cancer found on the resected specimen? I would wonder if there is another undetected invasive component still in the breast if they did a lumpectomy and slnb. If the 2mm focus was depleted for IHC, I would try to test recep...
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