Metastasis of Papillary Thyroid Carcinoma to the Maxillary Sinus: Case Report and Review of the Literature

<div>(a) Papillary structure. Cell nuclei are slightly larger with coarsely granular chromatin (hematoxylin and eosin, 100×). (b, c) Immunohistochemical staining revealed tumor cells positive for thyroid transcription factor 1 (TTF-1) (positive for carcinoma arising from follicular epithelial cells) and thyroglobulin.</div>

Case Reports in Otolaryngology

fig4

Figure 4

Figure 4: Metastasis of Papillary Thyroid Carcinoma to the Maxillary Sinus: Case Report and Review of the Literature 