case_images: PMC8543013_01
case_images: Histology of the surgical specimen. (A) Calcitonin-positive medullary thyroid cancer is adjacent to normal thyroid tissue (immunohistochemistry, x10). (B) Solid nests of metastatic medullary thyroid cancer (arrows) in a lymph node (hematoxylin and eosin, x10).
case_images: fendo-12-727320-g001.jpg
case_images: PMC8543013_01_fendo-12-727320-g001.jpg
case_images: f1
case_images: Tumor cells were positive for calcitonin, chromogranin-A, synaptophysin, and neural cell adhesion molecule (CD56) by immunohistochemistry ( Figure 1 ).