Medical Excellence - Issue 2

anterior and posterior circulation ischemia. J Comput Assist Tomogr. 2014;38:627–33. 19. Zuo L, Zhang Y, Xu X, Li Y, Bao H, Hao J, et al. A retrospective analysis of negative diffusion-weighted image results in patients with acute cerebral infarction. Sci Rep. 2015;5:8910. 20. Makin SD, Doubal FN, Dennis MS, Wardlaw JM. Clinically con- firmed stroke with negative diffusion-weighted imaging magnetic resonance imaging: longitudinal study of clinical outcomes, stroke recurrence, and systematic review. Stroke. 2015;46:3142–8. 21. Benameur K, Bykowski JL, Luby M, Warach S, Latour LL. Higher prevalence of cortical lesions observed in patients with acute stroke using highresolution diffusion-weighted imaging. Am J Neuroradiol. 2006;27:1987–9. 22. Brandt T. Positional and positioning vertigo and nystagmus. J Neurol Sci. 1990;95:3–28. 23. Sakata E, Ohtsu K, Shimura H, Sakai S. Positional nystagmus of benign paroxysmal type (BPPN) due to cerebellar vermis lesions. Pseudo-BPPN Auris Nasus Larynx. 1987;14:17–21. Source: Blasberg, T.F., Wolf, L., Henke, C. et al. BMC Neurol (2017) 17: 111. https://doi.org/10.1186/s12883-017-0894-2. © The Author(s). 2017. s occur, transient ischemic attack (TIA) ed; otherwise cerebral ischemia seems unselected samples, (proven) cerebro- isolated vertigo is rare [9] and risk for low [10], however higher than in other nts [11], in particular when vascular s) are present [11]. In the last decade, nce has been put forward to show that tion ischemia can prese t w th isolated neurological symptoms in the 90 days preceding their stroke, most frequently vertigo [13]. To preclude future strokes it is crucial to identify those patients whose vertigo episode was a subtle TIA. For the clinician, there are two typical situations: the patient with acute onset, ongoing vertigo, and the patient free of symptoms on presentation, who reports (often multiple) transient episodes of vertigo. On a population basis, the lifetime prevalence of the latter is at least as high as th t of the former [5]. The former patient is usually seen in a hospital emergency department, whereas the latter may consult a practitioner or an outpatient clinic. In ias.Blasberg@stud.uni-frankfurt.de logy, Frankfurt University Hospital, Schleusenweg 2-16, in, Germany ation is available at the end of the article © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/ ) applies to the data made available in this article, unless otherwise stated. Issue-2  |  19 MEDICAL EXCELLENCE