34 Figure 25. Microscopic sections of adenomatousnodules. Topleft (21 x): characteristic appearance of thyroid glands with wide variation in size offollicles. Some nodules consist of mircofol- liculartissue, others ofcolloid cysts; still others show hyperplasia. Top right (150 x): hyperplasia with papillary infoiding of epithelium. Bottom (25 x ): Hurthle cell adenoma (subject No. 33).