Table 1.
Patient and adrenal characteristics at baseline (n patients = 194, n incidentalomas = 231)
| Patient characteristics | |
|---|---|
| Mean age (SDa) | 65 (12) |
| Women, n | 122 (63%) |
| Co-morbidity | |
| Hypertension, n | 108 (56%) |
| Hyperlipidemia, n | 52 (27%) |
| Diabetes (type 2), n | 41 (21%) |
| COPD b , n | 33 (17%) |
| Ischemic heart disease, n | 24 (12%) |
| Previous history of malignancy, but no evidence of present disease at the time the adrenal incidentaloma was detected | 24 (12%) |
| Stroke, n | 11 (6%) |
| Heart failure, n | 7 (4%) |
| Peripheral arterial diseasecss n | 7 (4%) |
| Adrenal characteristics | |
| Unilateral incidentaloma (right), n | 44 (23%) |
| Unilateral incidentaloma (left), n | 111 (57%) |
| Unilateral incidentaloma (side not stated), n | 1 (0.5%) |
| Bilateral incidentalomas, n | 37 (19%) |
| Mean size at initial adrenal imaging, mm (SD1)c | 21 (9.3) |
| Lipid rich (≤10 Hounsfield units)d | 79 (81%) |
| Lipid poor (>10 Hounsfield units) with an absolute washout < 50% indicating benign tumoure | 9 (45%) |
| Lipid poor (>10 Hounsfield units) with an absolute washout ≥ 50% indicating malign tumoure | 2 (10%) |
aStandard Deviation.
bChronic Obstructive Lung Disease.
cFor incidentalomas examined with adrenal imaging where size was stated (n = 218).
dFor incidentalomas were attenuation and washout was quantified (n = 98).
eFor incidentalomas were both attenuation and washout were quantified (n = 20).