Clinico-pathological characterization of mesangial proliferative glomerulonephritis with predominant deposition of IgM

Background. IgM nephropathy (IgMN) was first described in 1978 but whether IgMN is a distinct entity has not yet been confirmed. We tried to clarify the characteristics of IgMN on the basis of clinical and histological findings of patients who were treated and investigated by us.