Figure 4.

(A) Diff Quik; 5x magnification – Papillary clusters of thyroid follicular cells. (B) Papanicolaou; 40x magnification – Follicular cells from papillary thyroid carcinoma showing pale ovoid nuclei with intranuclear pseudoinclusions (arrows) and nuclear grooves. (C) Diff Quik; 10x magnification – Thyroid follicular cells arranged in microfollicles and trabecular groups. (D) Papanicolaou; 5x magnification – Predominance of microfollicles. Follicular cells from “nodule 2” have round nuclei with evenly dispersed, granular chromatin (inset, 40x magnification). (E) Diff Quik; 5x magnification – Metastatic epithelial cells arranged in trabeculae and crowded clusters. (F) Papanicolaou; 10x magnification – Metastatic epithelial cells arranged in trabeculae and microfollicles.