Carcinosarcoma of the breast: radiologic, ultrasonographic, and pathologic correlation

Carcinosarcoma of the breast is a rare neoplasm which has been reported less than 20 times. Comprised of both malignant epithelial and malignant connective tissue components, it may radiographically exhibit features of either cellular element. We report the first film-screen mammographic description of such a lesion in a breast. Osteoid matrix calcification demonstrated mammographically should, in retrospect, have suggested osteogenic elements preoperatively.