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Urinary Tract Obstruction

  • Urinary Tract Obstruction is a generic term referring to physical obstruction of urine flow through the urinary tract. Although a wide variety of etiologies can cause obstruction of the urinary tract, a common pathogenic sequence and set of clinical consequences result.
  • Hypospadia and Epispadia: Congenital stricture of the urethra
  • Renal and Urinary Tract Stones: Calculi may block ureters or urethra
  • Necrotizing Papillitis: Sloughing of necrotic renal papillae may block ureters
  • Neurogenic Bladder: Not a physical, but instead a functional, obstruction due to inability of bladder to void. Most urologists would term this "Urinary Retention" rather than obstruction.
  • Pregnancy: Pressure from fetus may impede flow of urine
  • Tumors: BPH, prostate adenocarcinoma, urothelial cell carcinoma]]s may anatomically block passage of urine
  • Inflammatory diseases: Prostatitis and urethritis may cause constriction of urinary tract
Clinical Consequences
  • Symptomology
    • Flank Pain: Severe flank pain may result if obstruction develops relatively acutely. However, a slowly developing obstruction may develop painlessly.
  • Complications