Ureteropelvic junction (UPJ) obstruction is a partial or total blockage at the place where the organ that produces urine (the kidney) and the tube that carries it to the bladder (the ureter) are joined.
Causes. Most often UPJ obstruction is congenital. Though it occurs less often in adults, UPJ obstruction may happen after kidney stones, surgery or upper urinary tract swelling. In UPJ obstruction, the kidney makes urine faster than it can be drained through the renal pelvis into the ureter.
One may also ask, how is UPJ obstruction treated? The traditional treatment for ureteropelvic junction obstruction has been open surgery to cut out the area of scarring and re-connect the ureter to the kidney. Over the past several years, newer less invasive treatment options have been developed.
what are the symptoms of UPJ obstruction?
Symptoms of UPJ obstructions include:
- The renal pelvis and/or kidneys are dilated (hydronephrosis)
- Urinary tract infection.
- Abdominal mass.
- Poor growth in infants (failure to thrive)
- Back pain.
- Flank pain.
How common is UPJ obstruction?
How common is ureteropelvic (UPJ) junction obstruction? UPJ obstruction occurs in about one of every 1,500 births, and is responsible for about 80% of all swollen urine-collecting systems. Males are affected at more than double the rate of females, and the left kidney is affected about twice as often as the right.
Can UPJ cause kidney failure?
If untreated, UPJ obstruction can lead to permanent loss of kidney function (kidney failure). Kidney stones or infection may occur in the affected kidney, even after treatment.
How is UPJ obstruction diagnosed?
UPJ obstruction is often diagnosed during prenatal ultrasound, when the enlarged kidney is seen. For those that occur later or are not detected at birth, symptoms suggesting UPJ obstruction include hematuria (blood in the urine), urinary tract infection, kidney infection, kidney stones, and abdominal discomfort.
How long does UPJ surgery take?
approximately 2 to 3 hours
Is UPJ obstruction hereditary?
Minimal hydronephrosis is not genetic and is not hereditary. If UPJ obstruction is determined to be the cause of the hydronephrosis, the chances for future children with the same obstruction may be as high as 50 percent.
Is hydronephrosis painful?
Hydronephrosis is the swelling of a kidney due to a build-up of urine. It happens when urine cannot drain out from the kidney to the bladder from a blockage or obstruction. Hydronephrosis may or may not cause symptoms. The main symptom is pain, either in the side and back (known as flank pain), abdomen or groin.
Can UPJ obstruction cause high blood pressure?
We have previously demonstrated in animals and in pediatric patients that hydronephrosis causes hypertension, which was attenuated by surgical relief of the ureteropelvic junction (UPJ) obstruction. Conclusions: In adults with hydronephrosis, blood pressure was reduced following relief of the obstruction.
How serious is a kidney blockage?
Blockage can be complete or partial. Blockage can lead to kidney damage, kidney stones, and infection. Symptoms can include pain in the side, decreased or increased urine flow, and urinating at night.
Is pyeloplasty a major surgery?
Pyeloplasty is a surgery which is done to relieve a blockage in the ureteral pelvic junction (UPJ). A tube, called a stent, may be placed into the ureter during surgery to drain urine from the ureter until your child heals. Early treatment of UPJ blockage can prevent kidney damage.
What is flank pain?
Flank pain is pain on the side of the torso, just below the ribs. Sometimes, the pain may extend to the low back. There are many organs and muscles in or near to the left and right flanks, making flank pain a common symptom. Some causes of flank pain, such as a kidney infection or pancreatitis, are very serious.
How is pyeloplasty done?
During pyeloplasty, a 2-3 inch cut is made just below the ribs. The obstructed segment of ureter is removed. The normal caliber ureter is then reattached to the renal pelvis. A stent (a tiny wire-meshed tube) is placed to drain urine from the kidney.
Can UPJ obstruction be intermittent?
Ureteropelvic Junction Obstruction (UPJ) Ureteropelvic junction obstruction is one of the most common causes of hydronephrosis – literally “water in the kidney”. This blockage can affect the function of the kidney, can cause intermittent episodes of abdominal pain, or both.
Is hydronephrosis a kidney disease?
Hydronephrosis is a condition that typically occurs when a kidney swells due to urine failing to properly drain from the kidney to the bladder. This swelling most commonly affects only one kidney, but it can involve both kidneys. Hydronephrosis isn’t a primary disease.
What is a laparoscopic pyeloplasty?
Laparoscopic Pyeloplasty is a minimally invasive technique to treat a blockage of urine flow from the kidney to the bladder due to an ureteropelvic junction obstruction (UPJ). GENERAL INFORMATION.
Where is the Vesicoureteric Junction?
The vesicoureteric junction (VUJ), also known as the ureterovesicular junction (UVJ) is the most distal portion of the ureter, at the point where it connects to the urinary bladder.