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April 3, 2026Scientific ReportsOpen Access

Nationwide trends in radiotherapy use among older patients with early-stage non-small cell lung cancer in Japan, 2013–2022

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Analysis reveals increasing radiotherapy use in older patients with early-stage lung cancer, suggesting variations by age and treatment facility.

The aim is to examine trends in radiotherapy use among older patients with early-stage non-small cell lung cancer in Japan from 2013 to 2022.
Analyzed hospital-based cancer registry data from 2013 to 2022
Included 295,662 patients aged 65 years and older with epithelial lung tumors
Used logistic regression to assess changes in radiotherapy use
Radiotherapy use increased from 10.5% in 2013 to 12.8% in 2022
Radiotherapy rates varied by age group: 6.2% for 65-74, 14.8% for 75-84, and 35.5% for ≥85
Surgery use decreased in certain age groups, dropping from 89.6% to 32.8% among those aged ≥ 85

Ikawa et al. (2026) studied this question.

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Analysis reveals increasing radiotherapy use in older patients with early-stage lung cancer, suggesting variations by age and treatment facility.