• Stefano Peron, Jaime Mandelli, Nicola Galante, Stefano Colombo, and Davide Locatelli.
• Department of Neurosurgery, ASST West Milan - Legnano Hospital, Legnano, Italy. Electronic address: ste.peron@libero.it.
• World Neurosurg. 2017 Sep 1; 105: 1043.e1-1043.e5.

BackgroundPituicytoma is a rare tumor originating from glial cells of the adult neurohypophysis and infundibulum. Surgical removal is the treatment of choice for this neoplasm. In recent years the endoscopic endonasal approach has proven to be a viable and effective alternative to standard craniotomy.Case DescriptionWe report a case of a patient submitted to surgical treatment for a recurrence of pituicytoma, which was operated on transcranially at another hospital approximately 5 years previously. After transcranial surgery, the patient developed a symptomatic recurrence and an undisclosed intrasellar pseudoaneurysm that were treated with an endoscopic endonasal approach, but still required an intracranial approach to complete the resection.ConclusionsAn intrasellar pseudoaneurysm can endanger the endoscopic removal of the pituicytoma, forcing the surgeon to reevaluate a microscopic transcranial approach or to consider a staged procedure.Copyright © 2017 Elsevier Inc. All rights reserved.

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