Purpose:To improve the understanding of obstructive anuria of upper urinary tract(OAUUT) and upgrade the diagnosis and treatment level.Methods:Causes and treatments of 45 cases OAUUT were reviewed.Results:34 cases obtained normal renal function and 9 cases with azotemia after three months of operation.Conclusions:The main risk factors of OAUUT is urolithiasis (Stone disease) accounting for 77.8%. Ureter catheterization,double-J tube insertion under cystoscope and operation should be the main measures to relieve obstruction.
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