Digital Atlas of Breast Pathology by Meenakshi Singh, MD - Department of Pathology, Stony Brook University Medical Center

Encysted noninvasive papillary carcinoma, high power.
The nuclei are mildly pleomorphic with a vesicular chromatin pattern and prominent nucleoli. Note the thin fibrovascular core running from the upper left corner to the lower right corner. The myoepithelial layer is absent.

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