Bronchial carcinoid tumour with ectopic adrenocorticotrophin (ACTH) production is an uncommon cause of Cushing’s syndrome. In most instances, the patient presents with clinical hyperglucocorticolism and a search for its underlying pathology leads to the discovery of an inconspicuous bronchial carcinoid tumour, if at all. Often the tumour is not immediately detectable. We report a patient who presented in the reverse order-she initially had a large asymptomatic bronchial carcinoid tumour that subsequently manifested as clinical Gushing’s syndrome after remaining quiescent for four years.
Cushing’s syndrome is usually easy to recognise clinically. Determining the cause of non-iatrogenic Cushing’s syndrome is, on the other hand, often a diagnostic enigma.
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