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CD10 positivity in breast epithelial neoplasms
  1. Amanpreet S Bains,
  2. Jagmohan S Sidhu
  1. Department of Pathology and Laboratory Medicine, UHS Hospitals, Johnson City, NY, USA
  1. Correspondence to:
 Dr Amanpreet S Bains
 Department of Pathology and Laboratory Medicine, UHS Hospitals, 33–57 Harrison Street, Johnson City, NY 13790, USA; aman_bains{at}

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We read with great interest the study of Kalof et al1 concerning immunostaining patterns of myoepithelial cells in breast lesions. The authors identified focal CD10 staining of breast epithelial cells. We recently saw a case of co-existent intraductal papilloma, intraductal carcinoma and infiltrating ductal carcinoma of breast (figs 1 and 2). The cytoplasm of epithelial cells in all components was pan-cytokeratin positive and CD10 positive (figs 3 and 4) in addition to …

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  • Competing interests: None declared.

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