Fig. 3
From: CA19-9 producing locally advanced papillary thyroid carcinoma: a case report
Histopathological findings. The majority of the tumor was composed of well-differentiated PTC (arrowhead in A; ×5), while a portion of the tumor showed a solid pattern (arrow in A; ×5). The expression level of CA19-9 (C, D; ×20) and thyroglobulin (Tg) (E, F; ×20) in the well-differentiated PTC section (C, E) and the portion of PTC with a solid pattern (D, F) are shown, respectively