Neoadiuvant treatment with intravesical interleukin-2 for recurrent superficial transitional bladder carcinoma Ta-T1/G1-2.

The aim of this study was to evaluate the direct action of IL-2 on recurrent superficial transitional bladder carcinoma and the effect on recurrence rate. 27 patients were submitted to neoadjuvant treatment by intra-vesical instillation of recombinant IL-2 and to transurethral resection. We did not observe any effect on neoplasms but the recurrence rate was less than the expected one. It is possible that treatment of bladder carcinoma with intra-vesical instillation of IL-2 may promote immuno-prophilaxis.