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Updated: Aug 15, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Ectopic Cushing's syndrome secondary to olfactory neuroblastoma
Kenny Yu1, Federico Roncaroli2, Tara Kearney3
1Department of Neurosurgery, Salford Royal NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, M6 8HD, UK. Kenny.yu@srft.nhs.uk.
Abstract:
We present the case of a patient with Cushing's syndrome secondary to ectopic ACTH secretion. A MR of the head showed a left-sided nasal mass extending down from the cribriform plate. The patient underwent endoscopic resection with nearly complete removal of the mass. Histological examination showed an ACTH-secreting olfactory neuroblastoma (ONB). The patient's cortisol levels returned to normal range after surgery and have remained normal for over a year. ONB is a rare cause for ectopic ACTH secretion. This case highlights the diagnostic and management difficulties in patients with ectopic ACTH secretion, and provides a brief review of ONB.
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