Figure 2

(a) Low-power photomicrograph of spinal cord biopsy showing conspicuous hyalinized vessels in patient 1 (H&E, × 40). (b) Prominent hyalinized vessels in patient 3 and hemosiderin-laden macrophages (inset) (H&E, × 100, × 600). (c) Low-power photo demonstrating thickened vessels in patient 3 (LFB/PAS × 100).