PMC5573792_01
The mammogram shows a smooth-margined, high-density mass in the upper outer quadrant of the right breast.
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Mammography showed a smooth-margined, high-density mass in the upper outer quadrant of the right breast (see Fig. 1).
US performed in October 2014 (top) shows a well-circumscribed, hypoechoic mass measuring 10 mm. US performed in June 2015 (bottom) shows enlargement of the mass to 13 mm.
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Fig. 2). FNA of the right breast mass was performed, but the sample was inadequate because it did not contain breast duct epithelial cells. In June 2015, follow-up US revealed enlargement of the mass to 13 mm (see Fig. 2); FNA was conducted for the second time, but the result was undeterminable for the same reason.
Contrast-enhanced MRI shows a localized, well-enhanced mass but no extensive intraductal component.
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Contrast-enhanced MRI and contrast-enhanced CT showed a localized, well-enhanced mass at the same site, but no extensive intraductal component and no axillary lymph node metastasis (see Fig. 3, Fig. 4).
Histopathological appearance of the resected specimen (hematoxylin-eosin stain). The photographs show solid alveolar proliferation of tumor cells with small round nuclei and abundant clear cytoplasm.
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Histological examination revealed solid alveolar proliferation of tumor cells with small round nuclei and abundant clear cytoplasm, compatible with clear cell type RCC metastasis (see Fig. 5).