• Fred Bteich, Lea El Khoury, Georges Nohra, Viviane Trak, Sandrine Yazbek, and Mira Akiki.
• Neurosurgery Department, Hotel-Dieu de France Hospital, Achrafieh, Lebanon; Faculty of Medicine, Saint Joseph University, Achrafieh, Lebanon. Electronic address: fredbteich90@gmail.com.
• World Neurosurg. 2020 Jul 1; 139: 63-69.

BackgroundPituitary adenomas are the most common lesion of the sellar region. Very few cases in the literature have described their association with craniopharyngiomas in the same anatomic compartment, an entity defined as collision tumors of the sella.Case DescriptionA 35-year-old man presented with headaches and progressive visual disturbances. Radiographic imaging initially highlighted the presence of a pituitary craniopharyngioma. An endoscopic transsphenoidal pituitary approach was performed, during which the tumor was partially resected. The pathology report was positive for 2 entities: a nonfunctioning pituitary adenoma and a papillary craniopharyngioma. This was an unexpected diagnosis based on the surgical and initial radiologic findings.ConclusionsTo our knowledge, this is the first documented case of a collision tumor of the sella comprising a pituitary adenoma and a craniopharyngioma of the papillary type.Copyright © 2020 Elsevier Inc. All rights reserved.

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