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• W2015469438 abstract "Data concerning the relative efficacy of intravesical bacillus Calmette-Guerin (BCG) on subgroups of carcinoma in situ of the bladder are limited. We report the outcome of primary carcinoma in situ and carcinoma in situ associated with Ta or T1 transitional cell carcinoma of the bladder treated with BCG.Between 1987 and 1997, 135 patients (median age 70 years) with biopsy proven bladder carcinoma in situ underwent a standard course of 6 BCG instillations. Patients were divided into group 1-23 patients with primary carcinoma in situ, group 2-37 with carcinoma in situ associated with Ta transitional cell carcinoma and group 3-75 with carcinoma in situ associated with T1 transitional cell carcinoma.Median followup was 41 months. For groups 1 to 3, complete response rates at 3 months were 74% (17 of 23 cases), 70% (26 of 37) and 75% (56 of 75), respectively. The overall progression rates at 5 years were 20% (3 of 15 cases), 18% (4 of 22) and 49% (25 of 51). Cancer specific survival rates were 83% (10 of 12 patients), 86% (12 of 14) and 59% (17 of 29), and the numbers of patients alive with the bladder intact were 60% (9 of 15), 58% (11 of 19) and 30% (12 of 40). Patients in group 3 treated with BCG had progression significantly earlier than those in groups 1 and 2 (log-rank test p = 0.013). A complete response to BCG in group 3 patients significantly delayed time to progression (Cox regression p = 0.001) but did not reduce death from transitional cell carcinoma. Indeed, only 38% (8 of 21) of complete responders were alive with the bladder intact at 5 years.A single course of BCG is remarkably effective for primary carcinoma in situ and carcinoma in situ associated with Ta transitional cell carcinoma but is suboptimal in patients with carcinoma in situ associated with T1 transitional cell carcinoma. Better outcomes in each of the 3 groups may have occurred with maintenance BCG." @default.
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• W2015469438 date "2002-06-01" @default.
• W2015469438 modified "2023-10-18" @default.
• W2015469438 title "Treatment of Carcinoma In Situ With Intravesical Bacillus Calmette-Guerin Without Maintenance" @default.
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• W2015469438 doi "https://doi.org/10.1016/s0022-5347(05)64994-4" @default.
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