[Treatment of low grade and low stage urinary bladder cancer].
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Fifty-seven patients with low-grade and low-stage urinary bladder cancer were treated at our University Hospital between 1970 and 1980. The incidence of low grade and low stage cases was higher in the young group than in the older group, and in male than in female (p less than 0.05). Most of the patients were well-controlled by either TUR or other conservative therapies. The 5-year relative survival rate was 113%. The 5-year actual cumulative recurrence rate after TUR was 63%, whereas, the 5-year actual cumulative recurrence rate was only 35.4% in those who received intravesical instillation therapy and 25% in those who undergone RCH (Radio-Chemo-Hyperthermia) therapy. Five patients (9%) showed an increase of tumor grade from low to intermediate at the time of intravesical recurrence, but no patient showed a change from low to high grade.