Mar 3, 2025 · Ureteropelvic junction (UPJ) obstruction or pelviureteric junction (PUJ) obstruction partially obstructs the passage of urine from the renal pelvis to the ureter. It is the most frequent cause of hydronephrosis in the fetus and can also present in adulthood.

Nov 28, 2024 · Ureteric stents, also known as ureteral stents, double J stents, or JJ stents, are urological catheters that have two "J-shaped" (curled) ends, where one is anchored in the renal pelvis and the other inside the bladder.

If you have a UPJ obstruction, your pee flow is slow or stops completely. This increases your risk of kidney damage. In most cases, a UPJ obstruction is present at birth ( congenital urinary abnormality ).

Ureteropelvic junction (UPJ) obstruction describes various causes of impaired drainage at the UPJ. Regardless of the cause, the end result is the same: impedance in the normal flow of urine from the renal pelvis into the proximal ureter, resulting in caliectasis and hydronephrosis.

This case report shows the potential advantage of DECT in patients with urolithiasis requiring a stent, where selection of the stent type based on its dual-energy characteristics improves the resulting stent/stone color contrast for better management decision-making.

Ureteropelvic junction (UPJ) obstruction describes a restriction of urine flow from the kidney into the ureter (the tube that drains urine into the bladder) that results in dilation of the renal pelvis. UPJ obstruction is often present at birth, but occasionally does not present until adulthood.

Ureteropelvic junction (UPJ) obstruction is a blockage in the area that connects the renal pelvis (part of the kidney) to one of the tubes (ureters) that move urine to the bladder. It generally occurs when a baby is still growing in the womb.

Ureteropelvic junction (UPJ) obstruction is when part of the kidney is blocked. Most often it is blocked at the renal pelvis. This is where the kidney attaches to one of the ureters (the tubes that carry urine to the bladder).

Stent Placement: A stent (a tube) can be inserted to keep the ureter open and allow urine to flow more freely. Surgery: In some cases, open surgical intervention may be necessary to repair or reconstruct the ureteropelvic junction. This is more commonly required …

Feb 7, 2022 · Multidetector computed tomography (CT) scanning with three-dimensional reconstruction may be used to help establish the anatomy of UPJ obstruction and associated vessels. In children,...