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.
What is a VUJ?
The vesicoureteric junction (VUJ) is the most distal portion of the ureter where it connects to the urinary bladder.
Where is UV junction in human body?
The ureterovesical junction is located where the ureter (the tube that drains urine from the kidney) meets the bladder . Ureterovesical junction (UVJ) obstruction refers to a blockage to this area.
How do you remove VUJ stone?
The first choice of treatment for 0.5-0.6 cm UVJ stones is ureteroscopy with Holmium laser lithotripsy . Ureteroscopy with holmium laser is >90% effective in breaking up UVJ stones. Ureteral stent is usually left for 1-3 weeks.
What is VUJ obstruction?
Vesicoureteric junction obstruction (VUJO) refers to a restriction to urine flow, where the ureter (drainage tube from the kidney) meets the bladder .
What is VUJ stone?
As the stone approaches the vesicoureteric junction, symptoms of bladder irritability may occur. Calcium stones (calcium oxalate, calcium phosphate and mixed calcium oxalate and phosphate) are the most common type of stone, while up to 20% of cases present with uric acid, cystine and struvite stones.
What are the 4 types of kidney stones?
A kidney stone is a hard object that is made from chemicals in the urine. There are four types of kidney stones: calcium oxalate, uric acid, struvite, and cystine .
Is nephrolithiasis a disease?
Nephrolithiasis, or kidney stone disease , is a condition in which individuals form calculi (stones) within the renal pelvis and tubular lumens. Stones form from crystals that precipitate (separate) out of the urine.
Can you pass a 7mm kidney stone?
The smaller the kidney stone, the more likely it will pass on its own . If it is smaller than 5 mm (1/5 inch), there is a 90% chance it will pass without further intervention. If the stone is between 5 mm and 10 mm, the odds are 50%. If a stone is too large to pass on its own, several treatment options are available.
What is the function of Ureterovesical Junction?
Background: The valve function of the ureterovesical-junction (UVJ) is responsible for protection of the low pressure upper urinary tract from the refluxing of urine from the bladder . Controversy about the microanatomy of the human ureterovesical-junction persists.
How can I remove kidney stones without surgery?
What is extracorporeal shock wave lithotripsy ? Extracorporeal shock wave lithotripsy is a technique for treating stones in the kidney and ureter that does not require surgery. Instead, high energy shock waves are passed through the body and used to break stones into pieces as small as grains of sand.
What does a blocked ureter feel like?
Symptoms of a blocked ureter or urinary tract obstruction include: Pain in your abdomen, lower back or sides below your ribs (flank pain). Fever, nausea or vomiting. Difficulty urinating or emptying your bladder.
What size of kidney stone requires surgery?
The larger a stone is, the less likely that it will pass without surgery. Surgical treatment is usually recommended for stones 0.5 centimeters in size and larger , as well as for patients who fail conservative management.
Is PUJ obstruction curable?
Treatment. Most cases of UPJ obstruction actually do not require surgery and resolve on their own . However, if patients exhibit pain, recurrent infections, evidence of worsening function or increasing swelling, they may require a surgery called a pyeloplasty to prevent kidney injury and correct the blockage.
Is PUJ obstruction serious?
Because the obstruction is affected by blood flow the problem might stop and start, depending on how much blood is going through the vessel. PUJ obstruction can cause pain , repeated urine infections and damage to the affected kidney, but often there are no symptoms at all.
How long is a ureter?
The ureters are about 8 to 10 inches long . Muscles in the ureter walls tighten and relax to force urine down and away from the kidneys. Small amounts of urine flow from the ureters into the bladder about every 10 to 15 seconds.
