Pathophysiology 主要病理特点( principal characteristic of pathology ■节段性脱髓鞘( segmental demyelization) 小血管周围炎性细胞浸润Pathophysiology ◼ 主要病理特点(principal characteristic of pathology ) ◼ 节段性脱髓鞘(segmental demyelization) ◼ 小血管周围炎性细胞浸润