Extrapulmonary Findings and Malignancies in Participants Screened With Chest CT in the National Lung Screening Trial

One in five patients screened with CT for lung cancer will have extrapulmonary findings potentially requiring further evaluation. Indiscriminate workups of incidental extrapulmonary findings could place a significant burden on the health care system with little benefit because extrapulmonary malignancies diagnosed during screening are uncommon. Radiologists reporting screening CT should be familiar with existing recommendations for incidental findings from the ACR white papers.