Fig. 3. Immunohistochemistry shows (A) positive to calcitonin (calcitonin immunostaining, ×200), (B) positive to CEA (CEA immunostaining, ×200), (C) positive to TTF-1 (TTF-1 immunostaining, ×200), (D) positive to chromogranin A (chromogranin A immunostaining, ×200), (E) positive to synaptophysin (synaptophysin immunostaining, ×200), (F) negative to S100 (S100 immunostaining, ×200).

Int J Thyroidol 2024;17:309-13 https://doi.org/10.11106/ijt.2024.17.2.309

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