Due to the low incidence of adrenal disease most clinicians will rarely encounter a patient whose clinical signs are reminiscent of the description of Doctor Harvey Cushing or whose biochemical abnormalities are indicative of the syndrome described by Doctor Jerome Conn. Though most trainees preparing for postgraduate examinations will cover the management of a patient with phaeochromocytoma, the reality is that a practicing GP or hospital doctor might only meet one such patient during their entire career.