Clinics in diagnostic imaging (39). Conn's syndrome due to adrenocortical adenoma (Conn's tumour).

A 33-year-old man presenting with muscle weakness and hypertension was found to have hypokalaemia and metabolic alkalosis. Computed tomography (CT) showed an adrenal mass. Conn's syndrome due to an adrenocortical adenoma was confirmed at surgery. Hypertension-related adrenal disorders such as Cushing's syndrome, carcinoma and phaeochromocytoma are discussed. CT is currently the single most useful imaging method for identifying adrenal masses.