ureteropelvic junction obstruction

u·re·ter·o·pel·vic junc·tion ob·struc·tion

an impediment to the drainage of urine from the kidney, usually due to partial or intermittent blockage of the renal collecting system at the junction of the renal pelvis and ureter.

ureteropelvic junction obstruction

Obstruction of ureteropelvic junction; UP junction obstruction Urology A congenital obstruction at the junction between the ureter and renal pelvis, caused by ureteral stenosis, resulting in accumulation of urine in the pelvis under pressure, ergo hydronephrosis; UPJ obstruction is the most common cause of urinary obstruction in children Clinical Abdominal mass in infant with UTI, fever, back pain, hematuria Management Kidney decompression before or after delivery. See Hydronephrosis.
References in periodicals archive ?
Simplified open approach to surgical treatment of ureteropelvic junction obstruction in young children and infants.
Results of a practical protocol for management of prenatally detected hydronephrosis due to ureteropelvic junction obstruction. Pediatr Surg Int 2008;25:61-7.
While a third of patients are asymptomatic, renal calculi and ureteropelvic junction obstruction are common, leading to hydronephrosis.
Congenital anomalies of the kidney and urinary tract are part of a family of diseases with different anatomical origins, including kidney anomalies, such as multicystic dysplastic kidney, hypoplastic kidney, ureteropelvic junction obstruction, vescicoureteral reflux, megaureter, and anomalies of the bladder and urethra.[sup.1]
Koleda and colleagues studied the density of interstitial cells in ureteropelvic junction obstruction.[sup.24] The number of fields with few ICC (0-1) was significantly lower in obstructed group than non-obstructed group.
In the presence of ureteropelvic junction obstruction (UPJO), a full-thickness incision was made using a hook knife truly lateral to the UPJ.
Braga and colleagues examined open flank, DL and laparoscopic procedures to treat ureteropelvic junction obstruction; they also observed that the laparoscopic approach had the longest operative time, but the shortest hospital stay, which is similar to our results.[sup.3] With ongoing increased adoption of LDN, it is likely that LDN operative times will be reduced, and approach that of its open counterparts.[sup.3] Patients in the LDN group lost a significantly lower amount of blood intraoperatively, experienced a lower rate of major and minor complications and spent less time in hospital postoperatively than patients in either the FL or DL groups.
Open dismembered pyeloplasty described by Anderson-Hynes is considered the gold standard to treat ureteropelvic junction obstruction (UPJO), with success rates exceeding 83%.[sup.1] Muscle-sparing incisions through dorsal lumbotomy provide adequate exposure for UPJO repair, while maintaining minimal convalescence time.
Congenital ureteropelvic junction obstruction and primary obstructive megaureter.
Ali (name changed) was born with a rare congenital abnormality, Ureteropelvic Junction Obstruction with poor function in the left kidney.
Variable chronic partial ureteral obstruction in the neonatal rat: a new model of ureteropelvic junction obstruction. Kidney Int 2005;67:4252.