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Urgent chemotherapy was started for AML with presumptive CNS MS. The mass resolved with chemotherapy, and treatment was consolidated with radiotherapy. Although exceedingly rare, this case highlights the potential for MS to present similarly to a primary CNS tumour. MS should be part of the differential diagnosis as part of a CNS mass, particularly if the complete blood count is abnormal.<\/jats:p>","DOI":"10.1136\/bcr-2017-220891","type":"journal-article","created":{"date-parts":[[2017,8,11]],"date-time":"2017-08-11T14:05:20Z","timestamp":1502460320000},"page":"bcr-2017-220891","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Acute myeloid leukaemia masquerading as a primary CNS tumour"],"prefix":"10.1136","volume":"2017","author":[{"given":"Branko","family":"Cuglievan","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian A","family":"Menegaz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sofia","family":"Garces","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael E","family":"Rytting","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2017,8,11]]},"reference":[{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1751-553X.2011.01361.x"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.2","doi-asserted-by":"publisher","DOI":"10.1038\/sj.leu.2404491"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.3","doi-asserted-by":"crossref","first-page":"690","DOI":"10.1200\/JCO.1993.11.4.690","article-title":"Granulocytic sarcoma is associated with the 8;21 translocation in acute myeloid leukemia","volume":"11","author":"Tallman","year":"1993","journal-title":"J Clin Oncol"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.4","doi-asserted-by":"publisher","DOI":"10.1097\/00043426-200310000-00004"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.5","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1097\/PAT.0b013e3283583413","article-title":"Isolated intracranial myeloid sarcoma","volume":"44","author":"Hodges","year":"2012","journal-title":"Pathology"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.6","doi-asserted-by":"crossref","first-page":"1102","DOI":"10.3390\/jcm4051102","article-title":"Intracranial CNS manifestations of myeloid sarcoma in patients with acute myeloid leukemia: review of the literature and three case reports from the author's institution","volume":"4","author":"Cervantes","year":"2015","journal-title":"J Clin Med"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.7","doi-asserted-by":"crossref","first-page":"314","DOI":"10.5414\/NP300949","article-title":"Central nervous system involvement by myeloid sarcoma: a report of 12 cases and review of the literature","volume":"35","author":"Olar","year":"2016","journal-title":"Clin Neuropathol"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.8","doi-asserted-by":"crossref","first-page":"217","DOI":"10.2214\/ajr.132.2.217","article-title":"Computed tomography of intracerebral leukemic masses","volume":"132","author":"Wendling","year":"1979","journal-title":"AJR Am J Roentgenol"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.9","doi-asserted-by":"publisher","DOI":"10.1259\/bjr\/16630393"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.10","doi-asserted-by":"crossref","first-page":"167","DOI":"10.1148\/radiology.155.1.3856292","article-title":"Granulocytic sarcoma (chloroma): CT manifestations","volume":"155","author":"Pomeranz","year":"1985","journal-title":"Radiology"},{"key":"2025042712291159000_2017.aug10_2.bcr-2017-220891.11","first-page":"790","article-title":"Extramedullary myeloid cell tumors. 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