Fig. 4From: Primary maxillary sinus carcinosarcoma with multidisciplinary management: a case report with 4 years follow-up and literature reviewA, B The epithelial components CK8(+) and CK18(+) by immunohistochemistry. C, D The mesenchymal component was positive for S100α and vimentin by immunohistochemistry. Original magnification, 400× (A–D)Back to article page