Adrenocorticotropin-secreting carcinoid tumour identified and treated 12 years after presentation with Cushing's syndrome

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Abstract
Summary: A case of Cushing's syndrome due to an adrenocorticotropin (ACTH) secreting bronchial carcinoid tumour is described. Endocrine assessment suggested ectopic ACTH syndrome, but imaging revealed no tumour. Bilateral adrenalectomy was performed, and computed tomographic scans of chest and abdomen were performed annually. A small nodule became apparent in the right lung 12 years after the presentation, which postoperatively was confirmed as the bronchial carcinoid tumour responsible for the ectopic ACTH syndrome.