Pure mesangial proliferative glomerulonephritis. A clinicomorphologic analysis and its possible role in morphologic transition of minimal change lesion.

Renal biopsies from 45 children with idiopathic nephrotic syndrome were analysed. A clinicopathologic correlation has been attempted in 19 children with mesangioproliferative glomerulonephritis. Mesangial hypercellularity is found to have a direct correlation with the clinical presentation, response to therapy and final outcome. The presence of diffuse mesangial IgM or IgM with C3 is of no significance and lacks specificity.