PMC7154268_01
Mammography showed focal asymmetrical density (arrows) in the right breast with scattered fibroglandular density.
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F1
Mammography, breast composition of Breast Imaging Reporting and Data System category 2 (Fig. 1), showed focal asymmetrical density in the right upper and inner quadrant.
Ultrasonography. A large tumor (indicated by arrows) with an expansive growth pattern showed predominantly high-level internal echoes on ultrasonography.
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F2
Ultrasonography showed a well-demarcated and hypervascular tumor with predominantly high-level internal echoes (Fig. 2).
Histological findings of the tumor. a The tumor cells had a large nucleus and scant cytoplasm with abundant mitoses. HE. x400. b A lot of fat cell interspersion was observed in and around the tumor cell conglomerate. HE. x100.
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F3
Routine histological examination of the tumor revealed atypical cells with a large nucleus, scant cytoplasm, and abundant mitoses accompanied by a lot of fat cell interspersion (Fig. 3a, b).