Intravesical Gemcitabine Instillation Followed by Transurethral Resection for the Treatment of Patients With Superficial Bladder Cancer at Low Risk.

The purpose of this study is to determine whether neoadjuvant intravesical Gemcitabine is enough active in patients with a solitary, low risk superficial bladder cancer.After diagnostic urethrocystoscopy or bladder sonography, all patients will receive intravesical gemcitabine once a week during 6 weeks. Two weeks after finishing antiblastic therapy, all patients will be submitted to a new cystoscopy, with TUR or cold biopsies of the site of the initial lesion.