Heavy Cigarette Smoking and Aggressive Bladder Cancer at Initial Presentation
Eugene J Pietzak1, Phillip Mucksavage1, Thomas J Guzzo1
1Division of Urology, Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, PA.
Urology
|July 21, 2015
Summary
Heavy smoking significantly impacts bladder cancer, increasing the likelihood of high-grade, muscle-invasive tumors. Patients meeting National Lung Cancer Screening Trial criteria also show a higher risk of aggressive bladder cancer at diagnosis.
Area of Science:
- Urology
- Oncology
- Public Health
Background:
- Smoking is a primary risk factor for bladder cancer.
- Understanding smoking intensity's impact on tumor characteristics is crucial for diagnosis and treatment.
- Previous studies have not fully elucidated the relationship between smoking intensity and initial bladder tumor pathology.
Purpose of the Study:
- To investigate the association between smoking intensity and clinicopathologic features of bladder cancer at initial diagnosis.
- To determine if patients meeting National Lung Cancer Screening Trial (NLCST) criteria have distinct tumor characteristics.
Main Methods:
- Retrospective review of a prospective database of 739 patients diagnosed with urothelial cell carcinoma between 1987 and 2009.
- Patients stratified into nonsmokers, light smokers (≤30 pack-years), and heavy smokers (>30 pack-years).
- Analysis of tumor grade, clinical stage, and muscle invasiveness, including a subset meeting NLCST criteria.
Main Results:
- Heavy smokers (39.5%) were more likely to have high-grade, advanced-stage tumors compared to nonsmokers and light smokers.
- Heavy smokers had a higher incidence of muscle-invasive bladder cancer (MIBC) at initial diagnosis (OR=1.38).
- Patients meeting NLCST criteria (23.2%) were more likely to present with high-grade, muscle-invasive tumors.
Conclusions:
- Heavy smoking is associated with more aggressive bladder cancer at initial diagnosis.
- Patients meeting NLCST criteria are at increased risk for high-grade, muscle-invasive bladder cancer.
- These findings highlight the importance of smoking cessation and targeted screening for high-risk individuals.
