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Benke T, Dazinger F, Pechlaner R, Willeit K, Clausen J, Knoflach M. Lesion topography of posterior cerebral artery infarcts. J Neurol Sci 2021; 428:117585. [PMID: 34371243 DOI: 10.1016/j.jns.2021.117585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/24/2021] [Accepted: 07/19/2021] [Indexed: 11/18/2022]
Abstract
This study analyzed the topography of acute ischemic stroke in the posterior cerebral artery (PCA) territory. We studied 84 patients with unilateral ischemic PCA stroke. Patients were classified according to lesion levels as cortico-subcortical (superficial), combined (cortical and mesodiencephalic) or isolated thalamic. To receive a lesion map, data from acute MR and CT imaging were normalized and labelled automatically by mapping to stereotaxic anatomical atlases. Cortical lesions accounted for 41.7%, combined for 36.9%, and isolated thalamic lesions for 21.4%. The maximum overlay of ischemia and, thus, highest occurrence of PCA ischemic stroke was found in the ventral and medial occipito-temporal cortex and adjacent white matter association tracts. Dorsal and peripheral segments of the occipito-temporo-parietal region were only rarely lesioned. This configuration was similar in both hemispheres. Consistent with this lesion pattern, visual field defects (VFD) were the most frequent signs, followed by sensorimotor signs, dizziness and sopor, cognitive and oculomotor deficits, and ataxia. The three vascular subgroups differed not only by their anatomical lesion profile and lesion load, but also by their clinical manifestation; although patients with combined and thalamic lesions were sigificantly younger, they were more disabled than participants with cortical lesions. VFD were only found in cortical and combined, and oculomotor deficits only in mesodiencephalic lesions. White matter lesions were common in the cortico-subcortical and the combined group. Basal occipito-temporal and calcarine regions, and neighbouring white matter tracts have the highest risk of ischemia in acute PCA stroke.
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Affiliation(s)
- T Benke
- Clinic of Neurology, Medical University Innsbruck, Austria.
| | - F Dazinger
- Clinic of Neuroradiology, Medical University Innsbruck, Austria
| | - R Pechlaner
- Clinic of Neurology, Medical University Innsbruck, Austria
| | - K Willeit
- Clinic of Neurology, Medical University Innsbruck, Austria
| | - J Clausen
- Centre of Neurology, Hertie-Institute for Clinical Brain Research, University of Tübingen, Germany
| | - M Knoflach
- Clinic of Neurology, Medical University Innsbruck, Austria
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Toell T, Mayer L, Pechlaner R, Krebs S, Willeit K, Lang C, Boehme C, Prantl B, Knoflach M, Ferrari J, Fuchs P, Prokop W, Griesmacher A, Lang W, Kiechl S, Willeit J. Familial hypercholesterolaemia in patients with ischaemic stroke or transient ischaemic attack. Eur J Neurol 2017; 25:260-267. [PMID: 29053901 DOI: 10.1111/ene.13485] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/16/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Identification of patients with familial hypercholesterolaemia (FH) is a prerequisite for the appropriate management of their excess cardiovascular risk. It is currently unknown how many patients with acute ischaemic stroke or transient ischaemic attack (TIA) are affected by FH and whether systematic screening for FH is warranted in these patients. METHODS The prevalence of a clinical diagnosis of FH was estimated in a large representative series of patients with acute ischaemic stroke or TIA (ABCD2 score ≥ 3) using the Dutch Lipid Clinic Network Algorithm (DLCNA; possible FH ≥3, probable/definite FH ≥6). RESULTS Out of 1054 patients included in the present analysis, 14 had probable/definite FH (1.3%; 95% confidence interval 0.6-2.0) and 107 possible FH (10.2%; 8.4-12.0) corresponding to an overall prevalence of potential FH of 11.5%. Prevalences were even higher in patients with stroke/TIA manifestation before age 55 in men or 60 in women (3.1%, 0.6-5.6; and 13.1%, 8.3-17.9) and those with a prior history of cardiovascular disease (2.6%, 0.9-4.3; and 15.1%, 11.3-18.9). Of note, in two-thirds of our patients with probable/definite and possible FH, stroke or TIA was the initial clinical disease manifestation. CONCLUSIONS The frequency of potential FH, based on clinical criteria, in patients with acute ischaemic stroke or TIA was 11.5% and that of probable/definite FH (1.3%) was similar to recently reported counts for patients with acute coronary syndrome (1.6%). FH screening using the DLCNA is feasible in clinical routine and should be considered as part of the usual diagnostic work-up.
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Affiliation(s)
- T Toell
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - L Mayer
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - R Pechlaner
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - S Krebs
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - K Willeit
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - C Lang
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - C Boehme
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - B Prantl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - M Knoflach
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - J Ferrari
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - P Fuchs
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - W Prokop
- Central Institute of Medical and Chemical Laboratory Diagnostics, University Hospital of Innsbruck, Innsbruck, Austria
| | - A Griesmacher
- Central Institute of Medical and Chemical Laboratory Diagnostics, University Hospital of Innsbruck, Innsbruck, Austria
| | - W Lang
- Department of Neurology, Hospital Barmherzige Brueder, Vienna, Austria
| | - S Kiechl
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - J Willeit
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
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