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[Lung cancer--What has changed in two decades]
Maria Sucena1, Gabriela Fernandes, Henrique Queiroga
1Interna Complementar de Pneumologia do Hospital de S. João.
Revista Portuguesa De Pneumologia
|June 11, 2005
Summary
Lung cancer diagnosis shows a shift from squamous cell carcinoma to adenocarcinoma over two decades. Smoking rates increased, patient age rose, and symptomatic treatment decreased, indicating evolving trends in lung cancer.
Area of Science:
- Oncology
- Public Health
Background:
- Lung cancer (LC) is a leading cause of cancer death globally.
- Historically, squamous cell carcinoma was prevalent, but adenocarcinoma is now more common.
Purpose of the Study:
- To compare demographic and disease-related factors in lung cancer patients diagnosed between 1979-1982 and 1999-2002.
- To identify shifts in lung cancer epidemiology and treatment over a 20-year period.
Main Methods:
- Retrospective study analyzing 750 lung cancer cases diagnosed in two distinct periods.
- Comparison of patient demographics, smoking status, histological types, and treatment approaches.
Main Results:
- A shift in predominant histology from squamous cell carcinoma (46.2% in 1979-1982) to adenocarcinoma (47.1% in 1999-2002).
- Increased smoking prevalence (73.7% to 82.4%) and mean patient age (60.0 to 64.7 years) over the study periods.
- Significant decrease in patients receiving only symptomatic treatment (26% to 19%).
Conclusions:
- Lung cancer's histological landscape has evolved over the past two decades.
- There has been a reduction in the proportion of lung cancer patients treated solely with symptomatic management.
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