In contrast, leukocyturia was significantly associated with interstitial fibrosis (ci) in PR3-ANCA GN (p = 0.004, r = 0.605, Fig. 2B), while tubular atrophy (ct) inversely correlated with hematuria specifically in MPO-ANCA GN (p = 0.039, r =  − 0.464, Fig. 2C). Here, MPO is linked to ganglioneuroma.