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Comparison of ZT on axial CT (A), cross-sectional (B), and histologic (C) images of the same specimen. The ZT (arrows) is continuous with the posterior part of the thyroid lobe, extends posteromedially toward the posterior end of the esophagus, and is compatible with the other areas of thyroid tissue in the microscopic finding. LB indicates lateral border of the thyroid lobe; Es, esophagus; ThG, thyroid gland; Tr, trachea.
