Adrenocorticotropic hormone Secreting Olfactory Neuroblastoma producing Ectopic Cushing’s Syndrome

Olfactory neuroblastoma is a rare sinonasal tumour of neuroendocrine type arising from olfactory neuroepithelium. Cushing`s syndrome is a clinical entity occurring due to elevated serum cortisol levels which is commonly due to exogenous steroids. Ectopic ACTH giving rise to endogenous Cushing’s syndrome requires vigilant evaluation in recognition of ectopic site. This syndrome gives rise to multitude of metabolic derangements with high morbidity which warrants early evaluation and management.