Pre- and postoperative urographic findings in posterior urethral valves

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Abstract
In a series of 65 male infants and children, all with the diagnosis of posterior urethral valves, pre- and postoperative urographic findings were reviewed. In addition changes occurring in the bladder, and the implication of vesico-ureteral reflux were assessed. — Preoperatively diagnosed impairment of kidney function and concommitant dilatation of the upper urinary tract, with some exceptions, remained fairly unchanged at postoperative examinations In the case of marked vesico-ureteral reflux, permanent kidney function annihilation was significantly commoner than with slight or no reflux. — Although, as a rule, both the upper urinary tract and the bladder were affected, there were cases of posterior urethral valves with a normal appearing bladder. As the intravenous urography do not exclude the urethral abnormality, voiding cysto-urethrography has to be included in the primary radiological exploration of all cases with urological problems.

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