Male metaplastic breast cancer with poor prognosis: A case report

Figure 1 Ultrasonography revealed an ill-defined, lobulated, heterogeneous hypoechoic 2-cm mass on the left breast.

Figure 2 Computed tomography imaging. A: Left-sided mammogram with a 3.2-cm oval, indistinct, hyperdense mass on the mid breast; B: A 5.1-cm lobulated mass in the posterior basal segment of the right lower lobe on chest computed tomography.

Figure 3 Metaplastic carcinoma of the breast. A: The tumor is composed of pleomorphic and spindle cells with no ductal formation (hematoxylin and eosin, ×100); B: A necrotic focus is at the center of the tumor (arrow, hematoxylin and eosin, ×200); C: The spindle cells are positively stained for pancytokeratin (immunohistochemical staining, × 200).

Figure 4 Metastatic metaplastic carcinoma of the lung. A: The metaplastic carcinoma (right side) is present in the lung parenchyma (left side) (hematoxylin and eosin, × 100); B and C: The pleomorphic tumor cells are epithelioid or spindle in shape with necrotic foci (hematoxylin and eosin, × 200).