Fig. 2. Treatment effect after radiofrequency ablation (RFA) of a benign follicular nodule. (A) Note acellular dense hyalinization (black arrow) and the remaining benign follicular lesion (red arrow) (×40). (B) The remaining benign follicular lesion shows mixed benign thyroid follicles with variable sizes and nuclear enlargement without nuclear atypia at higher magnification (H&E stain, ×200).
