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Subsequent primary cancers following bladder cancer
E Salminen1, E Pukkala, L Teppo
1Department of Oncology, Turku University Central Hospital, Finland.
European Journal of Cancer (Oxford, England : 1990)
|January 1, 1994
Summary
Patients with bladder cancer face an increased risk of developing subsequent lung, larynx, and kidney cancers. Younger patients (<60 years) had a higher risk of secondary cancers.
Area of Science:
- Oncology
- Epidemiology
- Cancer Research
Background:
- Bladder cancer survivors have a risk of developing secondary primary cancers.
- Understanding these risks is crucial for long-term patient management and surveillance.
Purpose of the Study:
- To investigate the incidence of subsequent primary cancers in a Finnish cohort of bladder cancer patients.
- To identify specific cancer types with elevated risks and influencing factors.
Main Methods:
- Retrospective cohort study of 10,014 bladder cancer patients diagnosed between 1953-1989 in Finland.
- Follow-up data collected through 1989, comparing observed cancer incidence to national figures.
- Standardized Incidence Ratios (SIR) and 95% confidence intervals (CI) were calculated.
Main Results:
- A total of 652 metachronous secondary cancers were diagnosed.
- Significantly increased SIR for lung cancer in males (1.3) and females (2.6).
- Elevated SIR for larynx cancer in males (1.7) and kidney cancer in females (3.6).
- Younger patients (<60 years) at initial diagnosis had a higher risk of second cancers.
- No significant difference in second cancer risk based on radiotherapy treatment.
Conclusions:
- Bladder cancer patients have an increased risk for subsequent lung, larynx, and kidney cancers.
- Age at initial diagnosis is a key factor influencing secondary cancer risk.
- Findings support the need for targeted surveillance in bladder cancer survivors.