Radical cystectomy represents the treatment of choice for muscle-infiltrative bladder carcinoma; however, about 50% of patients relapse and die from the disease. In the present study, the prognostic significance of the DNA ploidy in transitional cell carcinoma of the urinary bladder (TCCB) is analyzed. The study was carried out on 66 patients with TCCB who underwent radical cystectomy. DNA ploidy was determined by flow cytometry (FCM) on paraffin-embedded specimens, and the results were analyzed and correlated with the tumor malignancy grade and stage and the clinical course. Forty of the 66 tumors studied (63%) were aneuploid. Aneuploid status was correlated with higher tumor T stage (P < 0.001) and grade (P < 0.001). Median follow up was 68 months (range: 12-105). Median survival was significantly longer in patients with diploid tumors (> 60 vs 45 months, P < 0.001). All patients with diploid tumors were alive and free of bladder cancer during follow-up, in contrast to only 30% of patients with aneuploid tumors. DNA ploidy was an independent prognostic factor, as shown by multivariate analysis (P = 0.006). All patients with pT > or = 3b and diploid tumors were alive at the time of analysis as opposed to none with aneuploid tumors. The results of this study suggest that DNA ploidy can provide prognostic information on patients with muscle invasive carcinoma of the bladder and might represent a means of selection for postoperative management.
This study assesses the correlation of p53 immunoreactivity and DNA ploidy status with biochemical recurrence after radical prostatectomy. p53 protein expression and DNA ploidy were evaluated on 84 archival paraffin-embedded radical prostatectomy specimens. Patients were divided into two groups: those with low (38/84, 45%) and those with high (46/84, 55%) p53 immunoreactivity. The results were correlated with Gleason score, stage and serum PSA. Kaplan-Meier biochemical recurrence free survival and the Cox hazard-regression model were used for analysis. Multivariate analysis revealed p53, DNA ploidy, Gleason score, PSA and stage to be independent prognostic factors in this order. Kaplan-Meier analysis showed a significant difference in biochemical recurrence when p53 high expression and DNA aneuploidy were combined. The results of this study suggest that stratification for p53 expression and DNA ploidy status can provide additional prognostic information for patients with prostate carcinoma after radical prostatectomy.
Flexible colonoscopy affect serum PSA (free and total) levels in certain patients. Special attention must be given to those patients with PSA levels in the "gray zone" before colonoscopy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.