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. Author manuscript; available in PMC: 2020 Dec 1.

Published in final edited form as: Surg Pathol Clin. 2019 Dec;12(4):865–881. doi: 10.1016/j.path.2019.08.001

Fig. 7. — FNA of MTC. (A) Loose clusters and single cells with eccentrically placed nuclei (Diff-Quik stain, original magnification ×200). (B) The tumor shows spindling with a pseudopapillary appearance, nuclear elongation, and rare grooves. Single cells are also present in the background (Papanicolaou stain, original magnification ×400). (C) Tumor cells are immunochemically positive for calcitonin. (Avidin-Biotin complex method, original magnification ×400).

Fig. 7. — FNA of MTC. (A) Loose clusters and single cells with eccentrically placed nuclei (Diff-Quik stain, original magnification ×200). (B) The tumor shows spindling with a pseudopapillary appearance, nuclear elongation, and rare grooves. Single cells are also present in the background (Papanicolaou stain, original magnification ×400). (C) Tumor cells are immunochemically positive for calcitonin. (Avidin-Biotin complex method, original magnification ×400).