Urothelial Carcinoma (Bladder, Ureter & Renal Pelvis)
Urothelial cancer can arise anywhere the urothelium runs — bladder, ureter, renal pelvis — because the whole lining shares a "field" exposed to the same carcinogens.
The big picture
Urothelial cancer can arise anywhere the urothelium runs — bladder, ureter, renal pelvis — because the whole lining shares a "field" exposed to the same carcinogens. The single most important clinical fact is its presentation: painless visible haematuria, which must never be dismissed. And the single most important management fact is the divide between non-muscle-invasive disease (managed through the cystoscope, with BCG) and muscle-invasive disease (which threatens life and may need cystectomy). Get the presentation and that divide and you have the spine of the topic.
The framework: know the risk factors and field effect, the histology (mostly transitional cell), the non-muscle-invasive vs muscle-invasive split, and the management that follows from it.
Mechanism pathway
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Diagnostic algorithm
Each step answers one question. Tap to expand.
Board traps
Painless visible haematuria = urothelial cancer until proven otherwise.
Smoking is the leading risk factor (~65% of male cases); think field defect → multifocal, recurrent.
The pivotal divide is non-muscle-invasive vs muscle-invasive — TUR + BCG vs cystectomy.
TUR must sample muscle to stage invasion correctly.
Most are transitional cell; squamous cell links to chronic irritation/schistosomiasis.
Lifelong surveillance because the whole urothelium is at risk.