Intravesical bacillus Calmette-Guerin therapy after second transurethral resection for primary T1 bladder cancer

International Journal of Clinical Oncology
Masato BabaAkihiro Kawauchi

Abstract

To evaluate the effect of intravesical bacillus Calmette-Guerin (BCG) instillation therapy after second transurethral resection (TUR) on primary T1 bladder cancer. The subjects were 180 patients diagnosed with T1 bladder cancer at our university and at affiliated hospitals between January 1990 and December 2015. Tumor residual rate, intravesical recurrence rate, and risk factors for intravesical recurrence were investigated. The median follow-up period was 26 (1-175) months. Of the 180 patients, 78 (43%) underwent a second TUR. Residual tumors were detected in 42 patients (53.8%), and no up-staging cases were observed. Within the whole group, 42 patients were treated with intravesical BCG therapy following a second TUR (group 1), 36 were treated with second TUR alone (group 2), 28 were treated with intravesical BCG therapy alone (group 3), and 74 were treated without second TUR or intravesical BCG therapy (group 4). The 1- and 5-year recurrence-free survival rates of the four groups were 80.7 and 59.7% (group 1), 69.0 and 26.3% (group 2), 76.3 and 56.6% (group 3), 64.6 and 48.6% (group 4), respectively. There was no significant difference between group 1 and group 3 (p = 0.401). Intravesical BCG therapy was the only factor prev...Continue Reading

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