Angiosarcoma of the breast.

Objective: This article describes the imaging findings, pathologic correlation, and clinical presentation of rare primary and secondary angiosarcomas of the breast.
Conclusion: With the increasing use of breast conservation therapy for breast cancer, reports of postirradiation angiosarcoma have increased. Both primary and secondary angiosarcomas may present with bruiselike skin discoloration, which may delay the diagnosis. Imaging findings are nonspecific. MRI may be used to determine lesion extent by showing rapid enhancement and washout in high-grade tumors.