[Asymptomatic hematuria. Features of 11 observed cases]

The management of 11 cases of asymptomatic haematuria (E.A. in text) of which 1 macroscopic and 10 microscopic, involved a very accurate investigation on family medical history (focusing on haematuria, renal failure, deafness and atopy) as well as individual anamnesis (former events of E.A., concomitant and previous upper respiratory tract infections and allergic diseases) together with all laboratory and clinical tests on kidney functions. The first six months, the 24/hrs proteinuria, the "minute count" of urinary erythrocytes and the blood pressure were tested in all patients once a month, while, during the following 18 months, 3 tests only were carried out. All the subjects presented normal renal functions; for 2 of them the intravenous urography proved to be necessary because of a renal pain concomitant with haematuria while the audiogram was required for 1 subject only. After 2 years, the microscopic E.A. is still enduring in 3 patients: 2 of them recording haematuria in familial anamnesis and 1 suffering from similar episodes, long before we studied his case. None of them had to undergo the renal biopsy which the authors take into consideration only when E.A. is higher than 10,000.000 R.C./24 hrs and associated with high proteinuria and high complement decrease or when hereditary and concomitant to deafness (high frequences only).