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Author: A/Prof Patrick Emanuel, Dermatopathologist, Auckland, New Zealand, 2014.
In erosive papillomatosis of the nipple, sections show a papillary epithelial proliferation which connects with the overlying epidermis (figure 1). The lesion consists of fibrovascular cores lined by bland cells (figure 2). The cells are usually at least 2 layers thick and consist of a myoepithelial layer and an epithelial layer which may exhibit apocrine differentiation (figure 3)
Erosive papillomatosis of the nipple pathology
None are generally needed.
Carcinoma – Breast carcinoma invading the nipple will show more nuclear atypia, usually lack a papillary growth pattern and lacks the dual myoepithelial/epithelial lining.
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