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Figure 5: Microphotographs showing features of probable vasculitis in nerve sample. (a and b) Marked concentric medial hypertrophy and luminal narrowing in nutrient vessels; (c and d) Peri-adventitial capillary proliferation due to repair and forming of clusters of new vessels in epineurium. (e and f) Hemosiderin deposits around the inflammed vessels and around perineurium in Prussian blue stain, indicates leaky vessels; (g and i) Van Gissen stain show diseased vessels with preserved elastica, subintimal fibrosis and reduplication of elastic lamina, loss of elastica in vessels with fragmentation and transmural inflammation

Figure 5: Microphotographs showing features of probable vasculitis in nerve sample. (a and b) Marked concentric medial hypertrophy and luminal narrowing in nutrient vessels; (c and d) Peri-adventitial capillary proliferation due to repair and forming of clusters of new vessels in epineurium. (e and f) Hemosiderin deposits around the inflammed vessels and around perineurium in Prussian blue stain, indicates leaky vessels; (g and i) Van Gissen stain show diseased vessels with preserved elastica, subintimal fibrosis and reduplication of elastic lamina, loss of elastica in vessels with fragmentation and transmural inflammation