Abstract
This case describes an infiltrating breast tumour with thyroid transcription factor-1 (TTF-1) positive staining and ductal differentiation in a 72-year-old woman. The presence of ductal carcinoma in situ with positive TTF-1 is a strong indication that this is a primary tumour and not a metastasis from lung.On PET scan and CT follow up there were no other tumours found in this patient. We are not aware of any previously reported TTF-1 positive primary breast carcinoma with ductal differentiation.
MeSH terms
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Aged
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Biomarkers, Tumor / analysis*
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Breast Neoplasms / chemistry*
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Breast Neoplasms / diagnosis
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Breast Neoplasms / pathology
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Breast Neoplasms / surgery
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Carcinoma, Ductal, Breast / chemistry*
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Carcinoma, Ductal, Breast / diagnosis
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Carcinoma, Ductal, Breast / pathology
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Carcinoma, Ductal, Breast / surgery
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Cell Differentiation
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Female
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Humans
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Immunohistochemistry
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Mastectomy
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Neoplasm Invasiveness
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Nuclear Proteins / analysis*
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Positron-Emission Tomography
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Thyroid Nuclear Factor 1
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Tomography, X-Ray Computed
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Transcription Factors / analysis*
Substances
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Biomarkers, Tumor
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NKX2-1 protein, human
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Nuclear Proteins
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Thyroid Nuclear Factor 1
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Transcription Factors