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MRI brain was significant for symmetrical hyperintense T2 fluid attenuated inversion recovery (FLAIR) in the corticospinal tracts, including parts of the pons and the mesodiencephalic junction. Though initial concern was for neuro-Beh\u00e7et\u2019s disease, brain biopsy ultimately revealed a diagnosis of astrocytoma. This report demonstrates a mimic of neuro-Beh\u00e7et\u2019s disease and the importance of confirming the correct diagnosis prior to initiating therapy.<\/jats:p>","DOI":"10.1136\/bcr-2018-226945","type":"journal-article","created":{"date-parts":[[2018,12,18]],"date-time":"2018-12-18T17:19:47Z","timestamp":1545153587000},"page":"e226945","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Brainstem astrocytoma as a neuro-Beh\u00e7et\u2019s disease mimic"],"prefix":"10.1136","volume":"11","author":[{"given":"Julia","family":"Manasson","sequence":"first","affiliation":[{"name":"Internal Medicine, Division of Rheumatology, New York University, New York City, New York, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan","family":"Howard","sequence":"additional","affiliation":[{"name":"Neurology and Psychiatry, New York University, New York City, New York, 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