Box 2.

Aetiology by nature

Benign
Functioning

  • Adenomaa

  • Phaeochromocytomab

Non-functioning

  • Adenoma

  • Cyst

  • Myelolipoma

  • Ganglioneuroma

  • Haematoma

Malignant

  • Adrenocortical carcinoma

  • Metastatic lesion

  • Phaeochromocytomab

  • ↵aMay secrete cortisol, aldosterone, sex hormone secretion.

  • ↵bUsually benign, but maybe malignant; catecholamine secreting.