Distribution of incidental findings (IFs) with regard to the severity
| IF | Patients with a given category IF* | |||
| n | % | n | % | |
| Category 1† | 279 | 5.1 | 204 | 8.4 |
| Category 2 | 1251 | 23.0 | 766 | 31.4 |
| Category 3 | 1938 | 35.6 | 1236 | 50.7 |
| Category 4 | 1972 | 36.3 | 1173 | 48.1 |
| Total | 5440 | 100 | ||
*Some patients had more than one IF.
†Category 1: urgent treatment or immediate work-up needed; category 2: further examination and follow-up within 3–6 months; category 3: findings potentially symptomatic in the future; category 4: harmless findings.