535974.fig.002a
(a)
535974.fig.002b
(b)
535974.fig.002c
(c)
535974.fig.002d
(d)
Figure 2: (a) “Subocclusive vasculitis” with inflammatory infiltrate in the thickened vessel wall. Note the keloid-like fibrosis around the vessel (hematoxylin and eosin, original magnification ×20). (b) Fibrosis extending into the perithyroidal skeletal muscle (hematoxylin and eosin, original magnification ×10). (c) Small follicles with scant colloid and small islands of oncocytic epithelium surrounded by an intense lymphoid infiltrate with germinal centers (hematoxylin and eosin, original magnification ×40). (d) Microabscess in a dense fibrous background (hematoxylin and eosin, original magnification ×40).