[Management of incidentalomas]

An incidentaloma is defined by the exclusion of other lesions, primarily phaeochromocytomas, by means of MRI and metanephrine and normetanephrine assays, followed by other secreting tumours by means of clinical examination and limited laboratory assays (potassium, cortisol, aldosterone). Tumours which need to be operated because of the risk of (malignant) adrenal cortical tumour can be distinguished from radiological adrenal anomalies which simply need to be monitored on the basis of the initial size of the lesion or its rate of growth on repeated CT scans.