Table 1.
Characteristics of systematic reviews measuring the prevalence of incidentalomas
| Systematic review (lead author, year) | No of included studies | Population | Organ of incidentaloma | Imaging modality | No of patients | No of patients with incidental findings |
|---|---|---|---|---|---|---|
| Nayan 2014 | 30 | Oncology patients (n=17), asymptomatic patients (n=2), asymptomatic and oncology patients (n=11) | Thyroid | PET, PET/CT | 197 386 | 3659 |
| Treglia 2014 | 20 | Oncology patients (n=16), asymptomatic patients (n=2), unclear (n=2) | Colon | PET, PET/CT | 16 215 | 329 |
| Kousgaard 2017 | 26 | Oncology patients (n=26) | Colon | PET, PET/CT | 108 578 | 2121 |
| Treglia 2015 | 11 | Known or suspected cancer (n=7), asymptomatic and oncology patients (n=4) | Parotid | PET, PET/CT | 50 099 | 210 |
| Bertagna 2014 | 9 | Known or suspected cancer (n=9) | Breast | PET, PET/CT | 96 557 | 292 |
| Bertagna 2014 | 6 | Known or suspected cancer (n=2), asymptomatic and oncology patients (n=4) | Prostate | PET, PET/CT | 47 925 | 711 |
| Xiong 2005 | 11 | Asymptomatic (n=2), colonic symptoms for investigation (n=9) | Extra-colon | CT colonoscopy | 2797 | 998 |
| Morris 2009 | 15 | Asymptomatic patients (n=15) | Brain | Brain MRI | 19 458 | 1864 |
| Takashima 2017 | 10 (12 cohorts) | Asymptomatic (n=11), psychiatric (n=1) | Brain (n=11), extra-cerebral (n=1) | Brain MRI | 7858 | 2661 |
| Dunet 2016 | 11 | Undergoing cardiac MRI (n=11) | Extra-cardiac | Cardiac MRI | 6722 | 1916 |
| Flor 2013 | 16 | Asymptomatic patients (n=1), suspected CAD (n=13), mixed (n=2) | Extra-cardiac | Cardiac CT | 14 409 | 4922 |
| Dentali 2010 | 6 | Patients not suspected to have pulmonary embolism (n=5), oncology patient (n=1) | Pulmonary vasculature (pulmonary embolism) | CT chest | 6498 | 147 |
| Donadini 2014 | 3 | Asymptomatic oncology patients (n=3) | Pulmonary vasculature (pulmonary embolism) | CT chest | 1845 | 24 |
| Jacobs 2008 | 6 | Asymptomatic (n=3), suspected CAD (n=3) | Thorax, abdomen, spine and heart (n=3) Extra-cardiac (n=3) | CT chest (n=3), cardiac CT (n=3) | 7179 | 3272 |
| Ramadorai 2014 | 7 | Asymptomatic children (n=7) | Spine | MRI spine | 557 | 129 |
CAD=coronary artery disease; CT=computed tomography; MRI=magnetic resonance imaging; PET= positron emission tomography.