Refluxing Chimney Versus Nonrefluxing LeDuc Ureteroileal Anastomosis for Orthotopic Ileal Neobladder: A Comparative Analysis for Patients With Bladder Cancer

PURPOSE

Radical cystectomy and various techniques of urinary diversion are gold standard treatments for invasive bladder cancer. However, postoperative hydronephrosis is a common complication in these patients. A special focus was placed on the type of ureteroileal anastomosis used with 2 different techniques performed at 1 institution.

MATERIALS AND METHODS

Between 1995 and 2003 a total of 106 consecutive patients with bladder cancer underwent cystectomy followed by construction of an ileal neobladder. The nonrefluxing technique of ureter tunneling described by LeDuc and the refluxing chimney technique used for ureter implantation into the ileum-neobladder were compared. Hydronephrosis due to ureteral strictures was studied immediately following surgery and up to 5 years after surgery.

RESULTS

A total of 204 RU were included in the study. The LeDuc technique was used in 132 RU (64%) and the chimney technique was used in 72 RU (36%). Hydronephrosis rate of 2% were found in each of the 2 groups after 5 years of followup.

CONCLUSIONS

Postoperative hydronephrosis due to ureteral strictures is observed at the same rate during long-term followup with the LeDuc and chimney techniques. We favor the chimney technique compared to the LeDuc tunnel due to easier technical preparation and a better chance to identify the ureters endoscopically at a later time. The chimney does give extra length to reach the ureteral stump, especially in cases of distal ureteral carcinoma in situ.

Reasonable Delay of Surgical Treatment in Men with Localized Prostate Cancer - Impact on Prognosis?

PURPOSE

In many centers patients with clinically localized prostate cancer might be confronted with a delay in therapy due to not immediately available treatment capacity at that specific center. Furthermore, a growing amount of patients want to have a second or third opinion before they finally decide what therapeutic option to choose. We investigated whether a reasonable delay from diagnosis to definitive treatment impact recurrence free survival rates in men undergoing radical prostatectomy (RP) for localized prostate cancer.

MATERIAL AND METHODS

Preoperative data of 795 men treated for localized prostate cancer by RP between 1/1992 and 6/2000 were evaluated including pretreatment PSA, clinical stage and biopsy Gleason score. In addition, time from biopsy to the date of RP was obtained and investigated as a potential prognostic factor. The influence of the time gap between biopsy and surgery was statistically evaluated by univariate Cox regression analyses and Kaplan-Meier analyses; a multivariate Cox Modell was performed including all preoperative parameters. Relapse following RP was defined as a postoperative PSA level >0.1 ng/ml.

RESULTS

Mean followup of the patients was 33 months (1-116 months). Twenty-five percent of the patients failed during that time period. Mean time gap between diagnosis and treatment was 62 days (median 54 days) ranging from 5 to 518 days. Univariate Cox regression analysis showed no significant correlation (p=0.062) of waiting time with recurrence rate. Multivariate Cox regression documented a highly significant association of PSA (p<0.001), clinical stage (p=0.001) and biopsy Gleason grade (p<0.001) but not not for time to treatment (p=0.841). In patients with high-grade cancer again no significant impact of treatment delay was found.

CONCLUSION

Treatment delay in the investigated time span of a few months did not adversely affect recurrence free survival rates. Patients can be reassured that they can evaluate treatment options without compromising efficacy due to a delay in treatment.

Transition zone cancers undermine the predictive accuracy of Partin table stage predictions

PURPOSE

The Partin tables represent the most widely used predictor of pathological stage in men with localized prostate cancer (PCa). The accuracy and performance of the tables have been tested across different populations. However, to our knowledge the potential limitations that may stem from differences between transition zone (TZ) and peripheral zone (PZ) prostate cancers has not been explored. We tested the predictive accuracy and performance of the Partin tables according to TZ vs PZ tumor predominance.

MATERIALS AND METHODS

Preoperative serum prostate specific antigen, clinical stage and biopsy Gleason sum data on 1,990 patients treated with radical retropubic prostatectomy were used to define the 2001 Partin probabilities of organ confinement and seminal vesicle invasion (SVI). Data on 1,320 patients who underwent staging pelvic lymphadenectomy and radical retropubic prostatectomy were used to define the probabilities of lymph node invasion (LNI) and organ confined disease (OC). ROC area under the curve was used to assess the predictive accuracy of the 2001 Partin tables relative to observed extracapsular extension (ECE), SVI, LNI and OC. Performance characteristics for each prediction were explored graphically with local regression, nonparametric smoothing plots. Results were compared between 222 TZ cancers and 1,768 PZ cancers.

RESULTS

The 1,990 radical retropubic prostatectomy specimens demonstrated ECE in 689 cases (34.6%) (TZ in 58 or 27.1% and PZ in 631 or 35.8%) and SVI in 224 (TZ in 13 or 6.1% and PZ in 211 or 11.9%). The 1,320 lymphadenectomy specimens demonstrated LNI in 56 cases (TZ in 2 or 0.9% and PZ in 54 or 4.6%). OC was found in 784 cases (59.4%) (TZ in 95 or 69.9% and PZ in 689 or 58.2%). Predictive accuracy was for ECE 76.4% (TZ 69.0% and PZ 77.2%), 78.0% for SVI (TZ 73.5% and PZ 78.3%), 78.6% for LNI (TZ 44.5% and PZ 79.9%) and 79.4% for OC (TZ 73.8% and PZ 80.0%).

CONCLUSIONS

The biological tumor characteristics of TZ PCa differ from those of PZ PCa. These differences appear to undermine the accuracy of pathological stage predictions.