[Sibling cases of nephritis resembling membranoproliferative glomerulonephritis].

We have experienced rare cases of membranoproliferative glomerulonephritis (MPGN)-like nephritis, which was seen in siblings. Both the brothers had asymptomatic hematuria and proteinuria at an age before 10, 7 and 4 years old, respectively. Renal biopsy revealed proliferative glomerulonephritis, resembling MPGN type III.