Fig. 1From: A rare malignant thyroid carcinosarcoma with aggressive behavior and DICER1 gene mutation: a case report with literature reviewImmunohistochemical stains demonstrated biphasic components. The carcinoma component (a) showed positivity for thyroglobulin (b). The sarcoma component (c) showed positivity for myogenin (d). All pictures are at 200×Back to article page