Does Papillary Carcinoma of Thyroglossal Duct Cyst Develop De Novo?

Figure 4

(a) Tumor has papillary architecture which is <1 cm with desmoplastic stroma and normal thyroid follicles identified, the upper right side (×200, H&E). (b) Nuclei are large and oval in shape and show clearing (×400, H&E). (c) The tumor cell cytoplasm is strongly reactive with CK19 (×200, CK19). (d) Galectin-3 staining is confined to the cytoplasm of the tumor cells (×200, Galectin-3). (e) HBME-1 staining is present within the plasma membrane of the tumor cells (×200, HBME-1).

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