PAEA Surgery End Of Rotation (EOR) Practice Exam

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What percentage of lung cancer cases does adenocarcinoma account for?

The correct answer is: 35%

Adenocarcinoma is the most common type of lung cancer, accounting for approximately 35% of all lung cancer cases. This form of cancer typically arises in the peripheral regions of the lungs and is often related to long-term exposure to tobacco smoke, although it can also occur in non-smokers. Its prevalence is particularly notable among women and younger patients compared to other types of lung cancer, such as squamous cell carcinoma and small cell lung carcinoma, which may have different demographic and risk factor associations. Understanding that adenocarcinoma comprises a significant portion of lung cancer cases is crucial for healthcare professionals, particularly in oncology, as it informs screening approaches and treatment strategies.