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Figure 2b. Papillary thyroid carcinoma in a 42-year-old man. (a) Photomicrograph (original magnification, x 400; hematoxylineosin stain) shows a psammoma body (arrow), a round laminar crystalline calcification. (b) Transverse sonogram of the right lobe of the thyroid demonstrates punctate echogenic foci without posterior acoustic shadowing, findings indicative of microcalcifications (arrows).
