高倍镜下，脉管炎患者动脉壁坏死，可见嗜中性粒细胞核碎片(核碎裂)。急性炎症是一种非选择性的病理过程，可导致组织的损伤。
At higher magnification, vasculitis with arterial wall necrosis is seen. Note the fragmented remains of neutrophilic nuclei (karyorrhexis). Acute inflammation is a non-selective process that can lead to tissue destruction.