• Caglar Temiz, Murat Kutlay, Mukerrem Safali, Cahit Kural, Can Ezgu, and Yusuf Izci.
• Department of Neurosurgery, Gulhane Education and Training Hospital, Ankara, Turkey.
• World Neurosurg. 2017 Feb 1; 98: 869.e7-869.e12.

BackgroundColloid cysts (CCs) are rarely found in the sellar-suprasellar region. Differential diagnosis of CCs is more challenging in this region because many other cystic lesions may locate or invade sellar or suprasellar structures. We present a large and unusual case of sellar-suprasellar CC with extension into the suprasellar, interpeduncular, and prepontine cisterns. This is the first case of sellar-suprasellar CC treated with an endoscopic transsphenoidal approach.Case DescriptionA 33-year-old woman presented with a 1-year history of recurrent headaches. Her headaches had been unresponsive to medical treatment for the last 2 weeks. She had normal neurologic and ophthalmologic examinations. Neuroradiologic studies showed a large cystic sellar lesion with extension into the suprasellar, interpeduncular, and prepontine cisterns. The lesion did not show any enhancement, not even in the cyst wall. Her hormonal status was also normal. The cystic lesion was totally resected via a purely endoscopic endonasal approach. There were no complications, and the patient was recovered completely with improvement of her headache. Pathology was consistent with a CC. At 6-month follow-up, magnetic resonance imaging did not show any evidence of the residual or recurrent lesion.ConclusionsAlthough rarely found in this location, CC should be considered in the differential diagnosis in patients who present with a sellar-suprasellar cystic lesion. Additionally, sellar-suprasellar CC would be a good candidate for the endoscopic endonasal approach.Copyright © 2016 Elsevier Inc. All rights reserved.

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