PMC9425891_01
Mammogram of the mass, showed heterogeneous calcification, and irregular borders.
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The mammography demonstrated a high-density mass lesion of size 2.7 x 2.2 x 1.7 cm, which was presented not well-circumscribed, irregular borders (Figure 1).
This picture showed the component of typical invasive ductal carcinoma.
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One of them was typical invasive ductal carcinoma (IDC) (Figure 2), the other one was presenting as osteosarcoma.
This picture showed the component of osteosarcomatous differentiation.
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Lots of immature trabeculae could be seen, and atypia osteocytes among them (Figure 3).
This picture showed the result of immunohistochemistry, the osteosarcomatous part is positive for SATB-2 (monoclonal antibody, Zhongshan Bio), the nuclear staining brown.
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The component of osteosarcoma expressed SATB-2 (Figure 4).
The gross image of the tumor, showed the cut surface is solid-cystic, hemorrhagic, and firm.
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The gross appearance of the tumor revealed a solid mass with hemorrhagic (Figure 5).