Outcomes and survival in nonbilharzial pure squamous cell bladder cancer in patients undergoing curative radical cystectomy.

Authors

null

Janet Baack Kukreja

The University of Texas MD Anderson Cancer Center, Houston, TX

Janet Baack Kukreja , Nourhan Ismaeel , Neema Navai , Ashish M. Kamat , Colin P.N. Dinney , Jay Bakul Shah

Organizations

The University of Texas MD Anderson Cancer Center, Houston, TX, UTH Medical School, Houston, TX

Research Funding

Other

Background: Pure squamous cell cancer of the bladder is uncommon in the United States. Because squamous cell bladder cancer is rare, there are no large studies with details on optimal preoperative neoadjuvant therapies and long-term outcomes. To improve the overall knowledge of the disease this study sought to provide a contemporary update in a single center cohort. Methods: A retrospective cohort study was performed. 57 patients had a radical cystectomy (RC) for pure nonbilharzialsquamous cell bladder cancer between 1995 and 2015. Demographics, risk factors for squamous cell bladder cancer, pathology, and outcomes were reviewed and compared with descriptive statistics. Advanced disease was defined as ≥ T3/T4 disease and any positive lymph node metastasis. Logistic regression was used to identify predictors of overall survival (OS), disease specific survival (DSS) and recurrence free survival (RFS). Kaplan-Meier curves were used for survival prediction. Results: With a median follow up of 24 months (IQR 9.7-131.8 months), 12 (21.4%) had a recurrence. The median time to recurrence was 15.5 months (IQR 5.0-20.0 months). Recurrence was most common in the pelvis, n = 5(62.5%). 20 had neoadjuvant chemotherapy (NAC), 16 of which it was combined with external beam radiation (XRT). 50.8% of patients had advanced pathology. 5-year OS was 59.7%. To predict RFS all of the following were adjusted for: age, stage, advanced pathology, nonbilharzialsquamous cell risk factors, lymphovascular invasion, and number of lymph nodes removed at RC. Predictors of RFS were combined NAC and XRT, pathologic T-stage, advanced disease (p = < 0.01, p = 0.02 and p = 0.02, respectively). Predictors of DSS were pathologic T-stage and node positive disease (p = 0.04 and < 0.01, respectively). OS was best predicted by clinical stage, p < 0.001. Conclusions: The combination of NAC and preoperative XRT may provide a RFS advantage in nonbilharzialsquamous cell bladder cancer. Those with clinically advanced disease continue to have a poor prognosis. However, OS does seem to have an improved prognosis compared to previous reports.

Disclaimer

This material on this page is ©2024 American Society of Clinical Oncology, all rights reserved. Licensing available upon request. For more information, please contact licensing@asco.org

Abstract Details

Meeting

2017 Genitourinary Cancers Symposium

Session Type

Poster Session

Session Title

Poster Session B: Prostate Cancer and Urothelial Carcinoma

Track

Prostate Cancer,Urothelial Carcinoma,Prostate Cancer

Sub Track

Urothelial Carcinoma

Citation

J Clin Oncol 35, 2017 (suppl 6S; abstract 363)

DOI

10.1200/JCO.2017.35.6_suppl.363

Abstract #

363

Poster Bd #

G27

Abstract Disclosures