Sporadic versus Radiation-Associated Angiosarcoma: A Comparative Clinicopathologic and Molecular Analysis of 48 Cases

<table>Unlike radiation-associated tumors, the majority of sporadic angiosarcomas of the breast were parenchymal in origin. This micrograph depicts infiltration and entrapment of lobular acini (lower right) by vasoformative angiosarcoma (H&amp;E, 200x).</table>

Sarcoma

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Figure 4

Figure 4: Sporadic versus Radiation-Associated Angiosarcoma: A Comparative Clinicopathologic and Molecular Analysis of 48 Cases 