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Here, we present a case of tectal lipoma, with subsequent severe hydrocephalus and absence of septum pellucidum which was initially misinterpreted as a form of holoprosencephaly, due to inadequate attention to T1-weighted images.<\/jats:p>","DOI":"10.1136\/bcr-2018-228648","type":"journal-article","created":{"date-parts":[[2019,5,8]],"date-time":"2019-05-08T15:05:15Z","timestamp":1557327915000},"page":"e228648","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Holoprosencephaly or severe hydrocephalus: T1 sequence tells the story"],"prefix":"10.1136","volume":"12","author":[{"given":"Fariba","family":"Zarei","sequence":"first","affiliation":[{"name":"Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pooya","family":"Iranpour","sequence":"additional","affiliation":[{"name":"Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sara","family":"Haseli","sequence":"additional","affiliation":[{"name":"Medical Imaging Research Center, Shiraz University of Medical Sciences, Shiraz, Iran"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2019,5,8]]},"reference":[{"key":"2025082700534193000_12.5.e228648.1","doi-asserted-by":"publisher","DOI":"10.1136\/bcr.07.2009.2110"},{"key":"2025082700534193000_12.5.e228648.2","doi-asserted-by":"crossref","first-page":"172","DOI":"10.4103\/1817-1745.117865","article-title":"Quadrigeminal plate cistern lipoma presenting with seizures in a child","volume":"8","author":"Jha","year":"2013","journal-title":"J Pediatr Neurosci"},{"key":"2025082700534193000_12.5.e228648.3","doi-asserted-by":"crossref","first-page":"S74","DOI":"10.1016\/j.mjafi.2016.06.003","article-title":"Lipoma of the quadrigeminal plate cistern","volume":"72","author":"Sharma","year":"2016","journal-title":"Med J Armed Forces India"},{"key":"2025082700534193000_12.5.e228648.4","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.155.4.2119122"},{"key":"2025082700534193000_12.5.e228648.5","doi-asserted-by":"publisher","DOI":"10.1016\/j.jocn.2004.08.015"},{"key":"2025082700534193000_12.5.e228648.6","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1007\/BF00303819","article-title":"Congenital triventricular hydrocephalus associated with a small lipoma in the quadrigeminal plate cistern","volume":"11","author":"Kawamata","year":"1995","journal-title":"Childs Nerv Syst"},{"key":"2025082700534193000_12.5.e228648.7","first-page":"989","article-title":"The septum pellucidum: normal and abnormal","volume":"10","author":"Sarwar","year":"1989","journal-title":"AJNR Am J Neuroradiol"},{"key":"2025082700534193000_12.5.e228648.8","first-page":"72544","article-title":"A proposed mechanism of emotion. 1937","volume":"7","author":"Papez","year":"1995","journal-title":"J Neuropsychiatry Clin Neurosci"},{"key":"2025082700534193000_12.5.e228648.9","doi-asserted-by":"crossref","unstructured":"Friede RL . Developmental neuropathology. 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