Ureteral Obstruction

Ureteral obstruction is a blockage of the ureters, which are the tubes that carry urine from the kidneys to the bladder. This condition can cause severe pain and discomfort, and if left untreated, can lead to serious complications.

Causes of Ureteral Obstruction

Ureteral obstruction can be caused by a variety of factors, including:

  • Kidney stones: These are small, hard mineral deposits that can become lodged in the ureters and block the flow of urine.
  • Tumors: Cancerous or non-cancerous growths can develop in the ureters and cause a blockage.
  • Blood clots: Clots can form in the ureters and obstruct the flow of urine.
  • Infection: Inflammation and scarring caused by infection can narrow the ureters and lead to obstruction.
  • Congenital abnormalities: Some people are born with abnormal ureteral anatomy that can increase the risk of obstruction.

Symptoms of Ureteral Obstruction

The symptoms of ureteral obstruction can vary depending on the location and severity of the blockage. Common symptoms include:

  • Severe pain: Pain can occur in the side, back, or abdomen, and may radiate to the groin.
  • Nausea and vomiting
  • Fever and chills
  • Urinary frequency and urgency
  • Blood in the urine

Diagnosis of Ureteral Obstruction

Diagnosing ureteral obstruction typically involves a combination of imaging tests and physical examination. Common diagnostic tests include:

  • Computed Tomography (CT) scan: This test uses X-rays and computer technology to produce detailed images of the urinary tract.
  • Ultrasound: This test uses high-frequency sound waves to create images of the kidneys and ureters.
  • Intravenous Pyelogram (IVP): This test involves injecting a contrast dye into a vein, which is then excreted by the kidneys and ureters, allowing for visualization of the urinary tract on X-rays.

Treatment of Ureteral Obstruction

Treatment for ureteral obstruction depends on the underlying cause and severity of the blockage. Common treatment options include:

  • Shock wave lithotripsy: This non-invasive procedure uses shock waves to break up kidney stones that are causing a blockage.
  • Ureteroscopy: This minimally invasive procedure involves inserting a small scope into the ureters to remove blockages or perform other procedures.
  • Percutaneous nephrostomy: This procedure involves placing a tube through the skin and into the kidney to drain urine and relieve the obstruction.
  • Surgery: In some cases, surgery may be necessary to repair or remove the blocked ureter.

Complications of Ureteral Obstruction

If left untreated, ureteral obstruction can lead to serious complications, including:

  • Kidney damage: Prolonged obstruction can cause permanent damage to the kidneys and lead to chronic kidney disease.
  • Sepsis: Bacterial infections can spread to the bloodstream and cause life-threatening sepsis.
  • Chronic pain: Untreated ureteral obstruction can lead to persistent and debilitating pain.

Article last updated on: 6th June 2025.
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