Superficial Bladder Cancer: Intravesical Chemotherapy and Tumour Progression to Muscle Invasion or Metastases

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Abstract
Summary— Of 299 patients who presented with superficial bladder cancer (Ta, TI), 60 were treated by intravesical chemotherapy (Epodyl, methotrexate or mitomycin C). The rate of tumour progression to muscle invasion or metastases was identical for each intravesical regime. There was no evidence that mitomycin C promoted tumour progression. Carcinoma in situ in non‐tumour‐bearing urothelium was the most significant predictive factor for progression to muscle invasion or metastases.