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[The current treatment of superficial bladder tumors].

This is a report on 754 new patients with urinary bladder tumors, registered on a nationwide scale during 1993. In 540 of them (70 per cent) the lesion is superficially located with involvement of mucosa and submucosa alone (Ti(s), T(a), T1). It is pointed out that after introduction of the modern treatment methods using intrabladder instillation of chemical agents and immunotherapeutics, the rate of relapses shows a significant decrease, and the tendency of the tumor to infiltrate is decreased.