The frequent sign in renal disease and disease of urinary tract is presents of blood in urine, hematuria, and it is discovered very often in children. Aim of this work was to establish the most frequent causes of hematuria in our recorded
material. Investigation was accomplished on 60 patients, by using standard clinical and biochemical methods. The results of
work have showed that hematiria may be faund in any age in children. Most patients belong to age 5-10 years 27 (45.0%),
belong to age up to 10 years, and 26,6% belong to age 1 -5 year. Hematuria is more common in school-aged children and in
adolescence. Gross hematuria is found in 60% of patients, and microscopic hematuria in 40% of patients. Infective cause of
hematuria is found in 29 patients, and in 31 patients other causes, such as : stones, sec.glomerular diseases, tumors, hematologic disorders, etc. As infective glomerular disease and infection of urinary tract, in 25 % patients the cause of hematuria is acute poststreptococcal glomerulonephritis, tuberculosis in 6,66 patients,urinary tract infecion in 16,6 patients (in 8,33% patients caused by E.colli). Anatomic abnormalities is found in 15% patients,asymptomatic hematuria in 6,6%, lithiasis in 5%, and Henoch - Schönlein in 5%, and coagulopathies in5 % of patients, other causes are rare.In observed sample of patients, we have registrated high frequency of hematuria in chlidren with ac. poststreptoccal glomerulonephritis, then in children with morphological abnormalitis of urinary tract,urinary tract infection, and IgAnephropathia as a very rare cause, but Trachtman and Hagg in their reserches found Alport syndrom and IgA nephropathy as a most frequently causes of Hematuria