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Table 2. Immunohistochemical markers for the differential diagnosis of in situ-mimicking architectures in metastasis to the breast

From: Metastatic ovarian cancer spreading into mammary ducts mimicking an in situ component of primary breast cancer: a case report

  Extramammary organ/tumor-specific Breast-related Myoepithelial Lymphatic endothelial
Lymphovascular tumor emboli (+) (−) (−) (+)
Intraductal spread by metastatic tumorsa (+) (−) (+) (−)
Coexistence of true in situ carcinoma (−) (+) (+) (−)
  1. aThe present case