Table 1.

Tubulointerstitial light microscopy

TubulointerstitiumTotal, n=85Severe AKI, n=46No Severe AKI, n=39
Acute tubular injury
 Mild36 (42)17 (37)19 (49)
 Moderate27 (32)13 (28)14 (36)
 Severe15 (18)11 (24)4 (10)
Bacterial foci4 (5)3 (6)1 (3)
Protein casts52 (61)27 (59)25 (64)
Molding casts21 (25)12 (26)9 (23)
Pigment casts46 (54)24 (52)22 (56)
Cytoplasmatic pigments50 (59)25 (54)25 (64)
Syncytium24 (28)15 (33)9 (23)
Regeneration
 Mild48 (56)25 (54)23 (59)
 Moderate28 (33)14 (30)14 (36)
 Severe6 (7)4 (9)2 (5)
Isometric vacuolation66 (78)38 (83)28 (72)
Microthrombosis2 (2)1 (2)1 (3)
TA/IF
 032 (38)19 (41)13 (33)
 138 (45)17 (37)21 (54)
 29 (11)7 (15)2 (5)
 32 (2)0 (0)2 (5)
Tubulointerstitial nephritis6 (7)4 (9)2 (5)
  • Data are expressed as n (%). TA/IF, tubular atrophy/interstitial fibrosis.