In another study with 410 patients with non-metastatic BC who were treated with RC, concomitant CIS in pure urothelial carcinoma was significantly associated with poor RFS (HR 2.1, 95% CI 1.19–3.58, p=0.01), while the association with CSS did not reach statistical significance (HR 1.7, 95% CI 0.92–3.00, p=0.09) [ 18 ].
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Impact of carcinoma <i>in situ</i> of bladder at transurethral resection and radical cystectomy on survival: Retrospective multicenter study.
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Although neither of the two U.S.-based studies demonstrated statistical significance, both showed a trend toward longer RFS in patients with CIS at TURB compared with those without.