Table 5.

Immunofluorescence microscopy patterns in diffuse proliferative glomerulonephritis

Pattern	Associated disorders
All classes of Igs with C3 and C1q	LN (31 cases)
Predominently mesangial IgA deposites (±IgM, C3)	IgAN (22 cases)
Granular deposits of IgG and C3 along capillary loops	PIGN (15 cases)
Mesangial deposits of IgA with bright C3	IgA predominant PIGN (1 case)
IgG and C3 deposits along capillary loops	MPGN (7 cases)
C3 deposits with abscent/scanty Igs	C3 GN (7 cases)

>MPGN: Membranoproliferative glomerulonephritis, PIGN: Postinfectious glomerulonephritis, LN: Lupus nephritis, IgAN: IgA nephropathy, C3 GN: C3 glomerulonephritis, Ig: Immunoglobulin