Medullary thyroid carcinoma presenting as rectangular cell type on fine‐needle aspiration |
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| Authors: | Andrew M. Schreiner M.D. Grace C. H. Yang M.D. F.I.A.C. |
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| Affiliation: | Department of Pathology and Laboratory Medicine, New York Presbyterian Hospital‐Weill Cornell Medical Center, New York, New York |
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| Abstract: | Medullary thyroid carcinoma typically presents as dyscohesive plasmacytoid, spindled, or polygonal cells on fine‐needle aspiration smears. We recently encountered a case of sporadic medullary thyroid carcinoma that presented as a hypercellular aspirate composed of cohesive aggregates of rectangle‐shaped cells. The case was mistakenly reported as a hypercellular follicular neoplasm on cytology. Subsequent thyroidectomy revealed medullary carcinoma. We draw attention to this distinctive rectangular cell type as an additional morphology for medullary thyroid carcinoma. Diagn. Cytopathol. 2009. © 2009 Wiley‐Liss, Inc. |
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| Keywords: | medullary thyroid carcinoma follicular neoplasm fine‐needle aspiration |
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