RATIONALE: Lymphadenectomy may remove tumor cells that have spread to nearby lymph nodes in patients with invasive bladder cancer. It is not yet known whether extended pelvic lymphadenectomy is more effective than standard pelvic lymphadenectomy during surgery.
PURPOSE: This randomized phase II trial is studying standard pelvic lymphadenectomy to see how well it works compared to extended pelvic lymphadenectomy in treating patients undergoing surgery for invasive bladder cancer.
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