Table 5.

Biopsy features in the 4 in-house cases of Bartonella IE-associated glomerulonephritis.

	Case 1	Case 2	Case 3	Case 4
Glomeruli	11	22	35	22
Globally sclerotic	1	3	15	5
Crescents	1 (fibrinoid nercrosis)	0	2 cellular, 6 fibrocellular	5 (fibrinoid necrosis)
Glomeruli with fibrinoid necrosis	present	absent	present	present
Glomerular exudative lesions	absent	absent	absent	absent
IgG	1+ m, g	2 to3+ m	3+ m	1+ m
IgA	trace	2 to 3+ m	3+ m	1+ m
IgM	3+ m, g	3+ m	3+ m, g	0
C3	3+ m, g	3+ m	3+ m, g	3+ m
C1q	1+ m, g	3+ m	2 to 3+ m, g	0
kappa	2+ m, g	3+ m	3+ m, g	2+ m
lambda	2+ m, g	3+ m	2+ m, g	3+ m
IFTA (interstitial fibrosis and tubular atrophy)	mild	mild	mod	mild
Mesangial hypercellularity	mild	mild diffuse	mild segmental	mild segmental
Endocapillary hypercellularity	present, segmental	present mild (MPGN)	absent	absent
ATN (acute tubular necrosis)	present	present	present	present
Electron dense deposits	mesangial and subendothelial	mesangial and subendothelial	mesangial	Mesangial