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The biphasic lesion is composed of large, irregularly branching ducts and smaller glands…
Figure 1
The biphasic lesion is composed of large, irregularly branching ducts and smaller glands in a lobular arrangement surrounded by hypocellular, dense collagenous stroma. The periphery of the lesion appears well-circumscribed but unencapsulated. (Image 4x)
Figure 2
Both the stromal and epithelial…
Figure 2
Both the stromal and epithelial components are cytologically bland and lack mitoses. Scattered…
Figure 2
Both the stromal and epithelial components are cytologically bland and lack mitoses. Scattered myoepithelial cells with clear cytoplasm easily are identified surrounding the ducts and glands. The histologic appearance is identical to fibroadenoma of the breast. (Image 20x)
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