Fig. 4From: Selpercatinib for treating recurrent mixed medullary and follicular cell-derived thyroid carcinoma: a case reportMicroscopic examination of peritracheal lymph node metastasis. Immunohistochemical findings of peritracheal lymph node metastasis with mixed medullary and follicular cell-derived thyroid carcinoma: a H&E × 40, b H&E × 200, c Calcitonin, d ThyroglobulinBack to article page