Improvement of kidney function after long-term preterminal kidney insufficiency in infravesical obstruction

Background: In early childhood in the majority of cases due to posterior ur ethral valves (PUV), lower urinary tract obstructions, in early childhood l ead to high pressure and damage to the upper urinary tract. In spite of ear ly urological intervention 25-60% of the boys with PUV develop chronic rena l insufficiency. Complete restitution of renal function is very uncommon. C ase report: We report a case of a boy now 13 years old, in whom a urethral stricture was diagnosed only at the age of 7 years as the cause of chronic preterminal renal insufficiency. Six years after urethrotomia interna the b oy has no complaints, good renal function, no voiding dysfunction and his h eight approaches the 25th percentile. Discussion: Recovery of renal functio n usually requires early relief of the obstruction and decompression of the upper urinary tract. However, this case report shows impressively that in spite of long-term preterminal renal insufficiency, restitution can be obse rved after treatment of bladder outlet obstruction.