肾动脉分支血管炎，淋巴细胞散在分布于血管壁及血管周围。结节性多动脉炎是常累及肾脏的一种系统性血管炎。血清p-ANCA通常是阳性。
Here is a vasculitis of a renal arterial branch. Lymphocytes are scattered in and around the vessel. This happens to be polyarteritis nodosa, a systemic vasculitis that most often affects the kidneys. The P-ANCA serology is usually positive
