Haematuria


  • frank

    • 25% have life-threatening condition

  •  vs microscopic

    • in women under 40 <2% chance of serious problem

Causes

  • Not worrying

    • strenuous exercise

    • urinary tract instrumentation

    • menstruation

  • Tumours

  • Stones

  • Infection

  • Bladder neck obstruction

  • Trauma

    • enlarged kidneys may cause frank haematuria from minor trauma

  • Renal parenchymal inflammation

    • glomerulonephritis (often + proteinuria)

    • arteritis

  • Microemboli

  • haemangiomas / arterio-venous malformations, .

False Positives

  • myoglobinuria

Investigations

  • MSU

    • up to 3 RBC per pigh power field normal

    • culture

  • IVU

  • USS

  • MRI /CT

  • Cystoscopy / retrograde pyelogram

  • Urine cytology

    • 3x voided urine

    • not early morning as degenerate urothelial cell common

Clues to diagnosis

  • Clots

    • shape may indicate origin

Follow up

  • if no abnormalities then annual urinalysis and cytology for 3 years

 

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