Fig. 2

(A) The tumor specimen was round, approximately 1.3 cm in size, reddish-brown, solid, with a smooth surface, and a tumor base that was preserved intact. (B, C) The tumor consisted of epithelioid cells arranged in a nested or glandular pattern with abundant interstitial vascularity (H&E × 100, H&E × 200). (D) The nuclei of the tumor cells had mild heterogeneity with visible nucleoli and clear or eosinophilic cytoplasm (H&E × 400)