Ureteropelvic junction (UPJ) obstruction is the most common cause of congenital hydronephrosis. Normal ureteral motility requires coordinated interaction between neurons, smooth muscle cells (SMCs), ...

A UPJ obstruction can be defined as a restriction to the flow of urine from the renal pelvis to the ureter that, if left uncorrected, will lead to progressive renal deterioration. [1] UPJ obstruction ...

A diagnosis of ureteropelvic junction (UPJ) obstruction implies a significant functional impairment of urinary transport from the renal pelvis to the ureter. UPJ obstruction does not represent a ...

One in every 500 babies is born with a condition called ureteropelvic junction obstruction (UPJO), an obstruction of the ureter that prevents urine from flowing from one or both of the kidneys into ...