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Histologic findings in the thyroidectomy specimen. (A) An example of a medullary microcarcinoma (H&E stain) at ×100 magnification. (B) C-cell hyperplasia (H&E stain) at ×400 magnification. (C) Calcitonin stain highlights the C cells at ×400 magnification. H&E, hematoxylin and eosin.
