Screen-detected lung cancer: a retrospective analysis of CT appearance.

Rationale And Objectives: The aim of this study was to retrospectively evaluate characteristics of lung cancers diagnosed in a low-dose computed tomographic lung cancer screening study.

Materials And Methods: As part of the International Early Lung Cancer Action Program, a cohort of 4782 at-risk participants were screened. A total of 86 cancers in 84 individuals were detected and evaluated for location, morphology (density, border), size, histology, stage at diagnosis, treatment, and survival.