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Outcomes and Prognostic Factors of Primary Urethral Cancer

Published:October 05, 2016DOI:https://doi.org/10.1016/j.urology.2016.09.042

      Objective

      To identify prognostic and treatment factors for primary urethral cancer using a nationwide database.

      Materials and Methods

      The National Cancer Database was queried for all cases of primary urethral cancer from 2004 to 2013. Patients with other cancer diagnoses, metastasis, or diagnosis on autopsy were excluded. Proportional hazards regression was used to identify independent predictors of overall survival in patients with primary urethral cancer. Because we hypothesized that predictors may covary by sex, we also performed regression analysis stratified by sex.

      Results

      We identified 1268 men and 869 women with primary urethral cancer. Women tended to have more advanced tumors and adenocarcinoma histology. Median survival for the entire cohort was 49 months (43-55), with 5- and 10-year survival rates of 46% and 31%, respectively. On multivariate analysis, age, race, stage, grade, and Charlson comorbidity index were independent predictors of overall survival. Histology was not a predictor of overall survival in the combined model; however, adenocarcinoma in women increased hazards of death, whereas it decreased hazards of death in men when compared with squamous cell carcinoma.

      Conclusion

      Men and women with primary urethral cancer had significant differences in histology, grade, and nodal status. In addition to several expected disease-related factors, black race was associated with increased mortality for patients with primary urethral cancer.
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