肾活检，血管周围有局灶性病变，即血管炎。在正下方是一个正常的肾小球。合格的肾活检最少要有6个肾小球。这样，漏诊局灶性病变的机会较小。
This is a renal biopsy in which there is a focal lesion centered around a blood vessel. Thus, a vasculitis is present. The one glomerulus at the lower center appears normal. An adequate renal biopsy should contain at least 6 glomeruli so that there is less chance that focal lesions will be missed.
