Table 3.
The concordance and discordance of light microscopy and immunofluorescence results
| Number of cases (n=95), n (%) | LM | IF diagnosis | Final diagnosis after correlation with IF |
|---|---|---|---|
| 28 (29.2) | Consistent with LN | LN | LN |
| 3 (3.1) | DPGN | LN | LN |
| 3 (3.1) | Consistent with LN | Inadequate for IF | Consistent with LN |
| 22 (23.1) | Chronic mesangioproliferative GN | IgAN | IgAN |
| 2 (2.1) | Chronic mesangioproliferativeGN | Inadequate for IF | Possibility of IgAN cannot be ruled out |
| 14 (14.7) | DPGN | PIGN | PIGN |
| 1 (1.05) | DPGN | IgA predominant PIGN | IgA predominant PIGN |
| 1 (1.05) | DPGN | Inadequate for IF | DPGN possibility of PIGN cannot be ruled out |
| 4 (4.21) | MPGN | MPGN | MPGN |
| 3 (3.1) | DPGN | MPGN | MPGN |
| 2 (2.1) | MPGN | Inadequate for IF | DPGN possibility of MPGN cannot be ruled out |
| 7 (7.3) | MPGN | C3 GM | C3 GM |
| 2 (2.1) | Mesangioproliferative GN | Positive-IgG, IgM and C3 negative-IgA | Inconclusive |
| 3 (3.1) | DPGN | Inadequate for IF | DPGN |
DPGN: Diffuse proliferative glomerulonephritis, MPGN: Membranoproliferative glomerulonephritis, IF: Immunofluorescence, PIGN: Postinfectious glomerulonephritis, LN: Lupus nephritis, Ig: Immunoglobulin, IgAN: IgA nephropathy, C3 GM: C3 glomerulonephropathy, LM: Light microscopy