title: Non-pituitary origin sellar tumours mimicking pituitary macroadenomas.
abstract: Although the large majority of sellar tumours are pituitary adenomas, several other pituitary and non-pituitary origin tumours arise in the sellar and parasellar regions. Given their location, non-adenomatous lesions frequently mimic pituitary macroadenomas and can pose a diagnostic challenge for the radiologist. Distinguishing rare sellar lesions from the common macroadenoma helps to direct the correct surgical approach and reduce the risk of incomplete resection and/or complications such as cerebrospinal fluid leak with the potential for meningitis. The purpose of this article is to review the imaging features of non-pituitary-origin sellar tumours, focusing on characteristics that may distinguish them from pituitary macroadenomas. Lesions include meningioma, metastatic disease, epidermoid cyst, germinoma, chondrosarcoma, giant cell tumour, and giant aneurysm.
authors: The University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA. travaus@gmail.com
authors: T A
authors: TA
authors: Abele
authors: Z F
authors: ZF
authors: Yetkin
authors: J M
authors: JM
authors: Raisanen
authors: B E
authors: BE
authors: Mickey
authors: D B
authors: DB
authors: Mendelsohn
mesh_terms: D000293:Adolescent; D000328:Adult; D002813:Chondrosarcoma / Q000175:diagnosis; D003937:Diagnosis, Differential; D004814:Epidermal Cyst / Q000175:diagnosis; D005260:Female; D018237:Germinoma / Q000175:diagnosis; D018212:Giant Cell Tumor of Bone / Q000175:diagnosis; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008579:Meningioma / Q000175:diagnosis; D008875:Middle Aged; D012658:Sella Turcica / Q000000981:diagnostic imaging*; D012888:Skull Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed / Q000379:methods*