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How frequent upper urinary tract TCCs involve also the bladder?
In about 40% of the cases, patients with TCC's of the upper urinary tract will also develop bladder TCC.
Are these tumours related with renal vein invasion?
No, unlike renal cell carcinomas, invasion of the renal vein is an uncommon feature of transitional cell carcinomas.
One month later, ultrasound demonstrates a moderate left hydronephrosis and irregular thickening of the renal pelvis wall consistent with tumoral involvement.