Asymptomatic gross hematuria followed by persistent microhematuria

A case of a previously healthy, 13-year-old male with IgA nephropathy is presented in order to illustrate clinical onset and differential diagnosis of this rather common clinical entity. The laboratory and histopathological diagnosis is illustrated and discussed, as well, together with a brief discussion of possible pathogenesis. In this disorder, in which approximately 11% of affected patients experience spontaneous remission, future development of molecular probes to determine prognosis is of great importance.