MCU in the follow up had persistent dilated urethra in 66% cases, unilateral reflux in 36% cases, bilateral reflux in 22% cases, residual posterior urethral valve
in 26% cases and urinary bladder diverticulum in only 4% cases.
Urinary extravasation in the newborn male with posterior urethral valves
Obstructive nephropathy in children: long-term progression after relief of posterior urethral valve
In our study, a history of operation because of posterior urethral valve
was present in 10 patients.
Once the diagnosis of posterior urethral valves
has been established with a voiding cystourethrogram and all acute medical issues stabilized, definitive treatment of the obstructing valves can then be performed.
7, 8] It is difficult to know the true incidence of posterior urethral valves
In this paper, we aimed to emphasize that in addition to the cervicothoracic spinal defects, the cases of male MURCS may be associated with other miscellaneous genitourinary anomalies, such as renal cross ectopy, vesicoureteral reflux, posterior urethral valve
and bladder dysfunctions related to prolonged infravesical obstruction, duplicated urethra, undescended testis and/or vanishing testis.
CONCLUSION: To conclude posterior urethral valve
is a threatening congenital anomaly that needs appropriate surgical treatment and long term follow up.
Predisposing factors such as hypotonia as seen in Down syndrome, connective tissue disorders as in Ehlers-Danlos syndrome, or structural malformations such as posterior urethral valves
should alert urologists to take special precautions with these patients because they may be at a higher risk of iatrogenic injury.
Moderate and severe cases with diameters greater than 15 mm (grades 3 and 4) are often associated with ureteropelvic junction obstruction, posterior urethral valves
, and vesicoureteral reflux (VUR); mild cases (grades 1 and 2) mostly resolve spontaneously (7).
The most commonly diagnosed CAKUT include a multicystic dysplastic kidney (MCDK), vesico-ureteric reflux (VUR) and obstructive uropathy due to posterior urethral valves
(PUV) or pelvoureteric junction obstruction (PUJO).
Figure 4 illustrates the case of a 5-year-old with undiagnosed posterior urethral valves
and significant upper urinary tract distress, ultimately resulting in renal failure.
Posterior urethral valves
(PUV) disorder is the most common cause of this condition in male fetuses (2).
Posterior urethral valves
, pressure pop-offs and bladder function.
In a retrospective analysis, of the 52 children treated for posterior urethral valves
(PUV), 34 had renal scarring (3).