What are incidentalomas?
In up to 10% of post-mortems and 4% of abdominal CTs a mass on the adrenal gland is found unexpectedly. The important causes of incidental tumours include lesions that produce (functioning) or do not produce (non-functioning) hormones. The most important causes are listed below:
| Unilateral | Bilateral |
|---|---|
| Functioning | Functioning |
| Adrenal adenoma | ACTH-dep Cushing's syndrome |
| Adrenal carcinoma |
CAH |
| Phaechromocytoma | Phaechromocytoma |
|
Idiopathic bilateral adrenal hyperplasia
|
|
| Non-functioning | Non- Functioning |
| Metastases | Infection (TB) |
| Adrenal carcinoma | Infiltration |
| Ganglioneuroma | Haemorrhage |
| Myelolipoma | Bilateral metastases |
| Haematoma | |
| Adrenolipoma | |
| Adrenal adenoma |
