[Isolated hematuria in adolescents and adults. The value of renal biopsy].
In 103 subjects with asymptomatic isolated haematuria (persisting for more than 6 months in the absence of proteinuria, bacteriuria, impaired haemocoagulation or urological disease) renal biopsy was performed. The mean age of the patients was 25.2 years, range 14-58 years. In 94% glomerular changes were detected--most frequently minimal glomerular lesions (67%) and proliferative mesangial glomerulonephritis (15%). Focal segmental proliferative glomerulonephritis was rare (4%). Immunofluorescent examination revealed IgA nephropathy in 40% (all cases of diffuse and focally segmental proliferative glomerulonephritis and one quarter of minimal glomerular lesions). Changes of tubules and interstitium were recorded in 26%, with the exception of one patient they were always associated with glomerular affection. From the investigation ensues that the predominating cause of isolated asymptomatic haematuria, not clarified by non-invasive examination, is usually not serious and is an affection frequently associated with tubulointerstitial changes. As many as 40% of isolated cases of haematuria may be the manifestation of IgA nephropathy. The deposition of IgA is more frequently associated with a more advanced grade of glomerular affection. Indication of diagnostic renal biopsy in isolated haematuria remains individual.
Ustrední vojenská nemocnice, Praha.
V
V
Monhart
J
J
Marek
O
O
Krenek
D000293:Adolescent; D000328:Adult; D000368:Aged; D001707:Biopsy, Needle; D005260:Female; D005921:Glomerulonephritis / Q000150:complications / Q000175:diagnosis; D006417:Hematuria / Q000209:etiology* / Q000473:pathology; D006801:Humans; D007668:Kidney / Q000473:pathology*; D008297:Male; D008875:Middle Aged
Izolovaná hematurie u dospívajících a dospĕlých. Výtĕznost ledvinové biopsie.