Medullary Thyroid Carcinoma
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Fusiform (spindle-shaped cells) and amyloid.
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Relatively monomorphic fusiform cells and amyloid.
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Epithelioid and fusiform (spindle-shaped) cells.
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Spindle cell morphology may be prominent.
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Histologic image with abundant amyloid.
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Amyloid surrounded by fusiform cells.
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Large epithelioid cells. rare intranuclear inclusion (arrow), red calcitonin granules, and amyloid.
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Fusiform (spindle-shaped) cell pattern with abundant amyloid.
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Epithelioid cells with anisonucleosis and red cytoplasmic granules. Amyloid is present.
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Monomorphic population of plasmacytoid cells with amyloid.
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Spindle-shaped and epithelioid cells (cell block).
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Isolated plasmacytoid cells with karyomegaly (ThinPrep).
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