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IFs and PPIFs by Category
| IF Category | Number of IFs (%) | Number of PPIFs (%) |
| Pulmonary | 131 (53.9%) | 31 (81.6%) |
| Skeletal | 53 (20.0%) | 1 (0.4%) |
| Cardiovascular | 40 (16.5%) | 0 (0%) |
| Thyroid | 10 (4.1%) | 2 (5.3%) |
| Lymph | 8 (3.3%) | 3 (7.9%) |
| Breast | 1 (0.4%) | 1 (0.4%) |
| Total | 243 (100%) | 38 (100%) |
IF = incidental finding; PPIF = potentially pathologic IF
