Comparison Capsule Sparing Cystectomy and Radical Cystoprostatectomy in Men With Bladder Cancer

Study Overview
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Brief Summary
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Bladder cancer is a common malignant tumor of the urinary system, radical resection plus urinary diversion is the first choice of treatment for muscle invasive bladder cancer. Urinary diversion of surgical options related to patient'survival and quality of life. In 2000, professor Chunxiao Liu invented detaenial sigmoid neobladder, this surgical method overset the traditional intestinal detubularization approach, which detached the serosal layer with smooth muscle from the bowel without split it. This kind of neobladder is easier to construct and have less impact on intestinal function. So far, it has been implemented for more than 700 cases in Zhujiang hospital, the age of patients range from 9 months (bladder rhabdomyosarcoma) to 88 years old. The filed of standard radical bladder cancer resection includes the structure of the prostate and seminal vesicles. More and more studies and long-term clinical experience in our hospital have confirmed that capsule sparing cystectomy can achieve good tumor control and excellent functional recovery. Our project is going to perform a randomized controlled trial for capsule sparing cystectomy and conventional radical cystoprostatectomy and look forward to assess the oncology outcome and functional recovery of these two procedures which provide an objective basis for the patients undergoing orthotopic urinary diversion in the future.

Detailed Description
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CSC group：patients undergoing transurethral resection and enucleation of the prostate first, do not open the bladder neck to maintain the integrity of the bladder neck. The enucleated prostate capsule is preserved under laparoscopic surgery, and the urinary catheter is stretched during the operation to avoid implantation and metastasis. CRC group：patients undergoing conventional radical cystoprostatectomy. All the patients undergoing detaenial sigmoid neobladder after cystectomy and accept at least 36 months follow up. Followup: Patients were followed up at every 3-6 mo after surgery in the first 2 yr. The last follow-up was in the 36th month. Biochemical examination、blood and urine routine tests were done every 3 to 12 months. Urodynamic investigation, cystoscopic examination, pelvic computerized tomography, renal dynamic imaging and retro-cystogram were also performed every 3 to 12 months postoperatively. Postoperative complications were classified as early (90 days or less) and late (greater than 90 days). Early and late complications were subdivided into those related and not related to the neobladder. Complication grade was classified according to the Clavien-Dindo system. Major complications were defined as grade III or higher. During the follow-up period, patients were asked about daytime and night-time continence and erectile function (EF). Bladder Cancer Index and International Index of Erectile Function-5 (IIEF-5) are designed to evaluate patients' urinary control and sexual function

Official Title
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A Randomized Controlled Study to Compare the Oncology Outcome and Functional Recovery of Capsule Sparing Cystectomy and Radical Cystoprostatectomy With Detaenial Sigmoid Neobladder in Men Suffering From Bladder Cancer

Conditions
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Bladder Cancer

Intervention / Treatment
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* Procedure: Capsule Sparing Cystectomy (CSC)
* Procedure: Conventional Radical Cystoprostatectomy (CRC)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Adult males aged 20 and above and healthy volunteers are not accepted; Bladder carcinoma in situ、T1G3 tumor、muscle invasive bladder cancer with clinical stage of cT2-T3N0M0 (If the clinical staging before neoadjuvant therapy meets the inclusion criteria, patients who have decreased to below cT2 after neoadjuvant therapy can also choose to be included according to the patient's wishes). Recurrent bladder cancer: recurrent NMIBC after treatment and Carcinoma in situ that does not respond to BCG vaccine treatment. ECOG score is 0 or 1. Voluntarily signed the informed consent. Exclusion Criteria: Preoperative serum creatinine more than 2.26mg/dl Or 200μmol/L. Cancer invaded prostate or urethral (confirmed by the pathology). Patients with distant metastasis. Abnormal PSA level, or suspected patients with unconfirmed prostate cancer . A history of other malignant tumors within three years. sigmoid chronic inflammation, like ulcerative colitis or intestinal tuberculosis, and so on. Severe cardiopulmonary and liver dysfunction, combined with other serious diseases Other conditions that have been approved by a urologist for not suitable for neobladder surgery.

Ages Eligible for Study
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Minimum Age: 20 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Capsule Sparing Cystectomy<br>Patients undergoing transurethral resection and enucleation of the prostate before laparoscopic cystectomy | Procedure: Capsule Sparing Cystectomy (CSC)<br>* Adopt endoscopic enucleation technology to preserve the prostate capsule and part of the urinary control support structure to help restore urinary control and erectile functions<br>|
| Placebo Comparator: Conventional Radical Cystoprostatectomy<br>Patients undergoing conventional radical cystoprostatectomy | Procedure: Conventional Radical Cystoprostatectomy (CRC)<br>* According to the consensus standard program, remove the accessory tissues including the bladder, prostate and seminal vesicles<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Post-operative urinary function | Assess post-operative urinary function using the bladder cancer index (BCI) at the 12th month after surgery | At the 12th month after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| bladder cancer specific survival rate | Determine bladder cancer control with CSC compared to CRC as measured by margin status and time to disease recurrence | 36 months | 
| Sexual function | Assess post-operative sexual function using IIEF-5 score | 36 months | 
| Intraoperative conditions | Including surgical time, bleeding volume, blood transfusion volume, etc. | 24 hour | 
| Early postoperative rehabilitation indicators | Including intensive care time, time to restore full flow diet, hospitalization time, drainage tube removal time, visual pain score, etc | 30 days after surgery | 
| Rate of serious complications | Assess rate of serious complications using Clavien Dindo Complication Grading System | 36 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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bladder cancer, detaenial sigmoid neobladder, prostate capsule sparing