163851.fig.002a
(a)
163851.fig.002b
(b)
163851.fig.002c
(c)
163851.fig.002d
(d)
Figure 2: Microscopy shows typical papillary structures (2(a), H&E × 100), lined by benign looking low cuboidal epithelial cells (2(b), H&E × 200). Tumor cells are immunopositive for cytokeratin (2(c), IHC (CK)[Daco] × 200) and S100 (2(d), IHC (S100)[Daco] × 200).