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Background  Radical cystectomy (RC) with pelvic lymph node dissection (PLND) and urinary diversion (UD) is considered the standard treatment for muscle invasive bladder cancer (MIBC). In a part of patients, RC procedure is aborted due to unresectable disease, other followed treatment like systemic chemotherapy, radiotherapy or cryotherapy may be a better option. The aim of present study was to report the preliminary results of transperineal cryotherapy for unresectable muscle invasive bladder cancer.    Methods  From January 2011 to August 2013, 7 male patients with pT4b unresectable bladder cancer underwent bilateral ureterocutaneostomy. Two performed a pelvic lymph node dissection (PLND). Then primary transperineal cryosurgery for preserved bladder at the guidance of transrectal ultrasound (TRUS) was performed. All patients underwent a dual freeze-thaw cycle using third-generation cryotechnology with ultrathin 17-gauge cryoneedles. Computer tomography (CT) and/or magnetic resonance image (MRI)were performed at 3 month intervals after cryosurgery to determine whether progression or recurrence occurred.    Results  All cryosurgery was performed successfully, mean operation time was 76.43 ± 25.12 min (range 50-120 min), mean blood loss was 19.29 ± 15.92 ml (range 5-50 ml). Mean hospital stay was 3.86 ± 1.68 day (range 2-7 days). No operative related deaths occurred. Four patients dead due to the metastasis disease at the follow up time of 8, 15, 18 and 37 months, respectively. Six patients received postoperative therapy, of whom 5 patients were treated with combined chemoradiation, and the other one received chemotherapy alone. The progression free survival (PFS) of the 7 patients was 22.00 ± 14.61 months (range 3-40 months). The one, two and three year overall survival (OS) was 85.7%, 57.1% and 42.9%, respectively.    Conclusion  Our results suggest that cryosurgery combination with chemoradiotherapy provide a safe and effective alternative method for unresectable pT4b bladder cancer. Longer follow-up is necessary to determine the sustained efficacy.

Transperineal cryotherapy for unresectable muscle invasive bladder cancer: preliminary experience with 7 male patients