A Retrospectively Diagnosed Case of IgG4-Related Tubulointerstitial Nephritis Showing Good Renal Outcome and Pathological Progress
Figure 2
The first renal biopsy showed almost normal glomeruli, massively infiltrating cells, severe tubular atrophy, and abundant interstitial fibrosis ((a), PAS, ). Even in the almost normal area, mild cell infiltration and loss of tubular epithelia cells were observed ((b), PAS, ). Around the ischemic glomerulus ((c), PAS, ) and arteriole ((d), Masson, ), fibrotic fibers were observed. Most of these fibers appeared around tubules, and infiltrating cells formed a characteristic storiform pattern ((e), PAM, ). The second renal biopsy showed almost normal glomeruli with afferent arteriolar hyalinosis ((f), HE, ) and no tubulointerstitial damage ((g), PAS, ).
