UPJ obstruction occurs most often in children and prevents the proper flow of urine, thereby threatening the integrity of the kidney. UPJ obstruction can also occur in adults. In children, UPJ obstruction is often present at birth and may be due to narrowing of the proximal ureter or the presence of an abnormal blood vessel over the ureter. Contemporary management of the obstructed ureteropelvic junction (UPJ) in the adult has evolved. While open surgical intervention was once considered the standard of care, today there are a myriad of minimally invasive treatments to alleviate obstruction of a hydronephrotic, poorly draining kidney.Cited by: 22.
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). The blockage slows or stops the flow of urine out of the kidney. Urine can then build up and damage the kidney. UPJ Obstruction in Adults. Uteropelvic junction (UPJ) obstruction is a blockage in the upper end of the ureter at the point where the ureter joins the renal pelvis — the ureteropelvic junction (UPJ). This condition can result in pain in one side of the body between the upper abdomen and the back or a urinary tract infection. UPJ is generally.
In older children and adults, the problem may be due to scar tissue, infection, earlier treatments for a blockage, or kidney stones. UPJ obstruction is the most common cause of urinary blockages in children. It is now commonly found before birth with ultrasound tests. In some cases, the condition may not show up until after birth. When UPJ occurs in older children or adults, it is usually due to scar tissue, abnormalities in muscles under the scar tissue, kidney stones, infection, or previous treatments or surgeries for a blockage. An obstruction also can be caused by compression of the UPJ by a blood vessel or irregularities in the fibrous bands around the ureter.