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GCT usually present as a solid sellar mass, slowly growing and causing compressive symptoms over time, occasionally with suprasellar extension. They comprise polygonal monomorphous cells with abundant granular cytoplasm, which is ultrastructurally filled with lysosomes. Here we report the case of a GCT presenting as a third ventricle mass, radiologically mimicking chordoid glioma, with aberrant expression of GFAP and Annexin\u2010A, which lends itself as an example of an integrated diagnostic approach to sellar\/suprasellar and third ventricle masses.<\/jats:p>","DOI":"10.1111\/neup.12907","type":"journal-article","created":{"date-parts":[[2023,5,6]],"date-time":"2023-05-06T06:55:46Z","timestamp":1683356146000},"page":"472-478","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Granular cell tumor of the neurohypophysis presenting as a third ventricle mass"],"prefix":"10.1111","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9262-1212","authenticated-orcid":false,"given":"Gianluca","family":"Lopez","sequence":"first","affiliation":[{"name":"Anatomic Pathology Unit Fondazione IRCCS Ca\u2019 Granda \u2013 Ospedale Maggiore Policlinico  Milan 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