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Radiographic conjugate horizontal eye deviation in patients with acute cerebellar infarction
Kazutaka Nishimura1, Tomoyuki Ohara1, Kazuyuki Nagatsuka2
1Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
Insights
Radiographic conjugate eye deviation (CED) is common in acute cerebellar infarction, often contralateral to the lesion. This finding is particularly noted in posterior inferior cerebellar artery (PICA) territory infarcts.
Area of Science:
- Neurology
- Neuroimaging
- Cerebrovascular Diseases
Background:
- Conjugate eye deviation (CED) is not well-studied in acute cerebellar infarction.
- Investigating CED incidence and associations in this patient group is crucial.
Purpose of the Study:
- To determine the incidence of CED on neurological examination and head imaging in acute cerebellar infarction.
- To explore associations between CED and vascular territory, lesion site, and clinical factors.
Main Methods:
- Retrospective review of clinical records and imaging for acute cerebellar infarction patients (within 12h of onset).
- Radiographic CED defined as >10° deviation of each eye to the same side on head imaging.
Main Results:
- Thirty-five patients with acute cerebellar infarction were analyzed.
- No patients exhibited CED on neurological examination, but 13 (37%) showed radiographic CED, predominantly contralateral to the lesion.
- Posterior inferior cerebellar artery (PICA) territory infarcts and involvement of the flocculonodular lobe/vermis were more common in patients with radiographic CED.
Conclusions:
- Radiographic CED appears relatively frequent in acute cerebellar infarction.
- CED is particularly associated with PICA territory infarcts involving the flocculonodular lobe and/or vermis.
Backgrounds:
Conjugate eye deviation (CED) has not been fully investigated in patients with acute cerebellar infarction. We investigated the incidence of CED on neurological examination and head imaging with acute cerebellar infarction and associations of CED with the involved vascular territory, lesion site and other clinical factors.
Methods:
We retrospectively reviewed clinical records and imaging in patients with acute cerebellar infarction within 12h after onset. We defined radiographic CED as deviation of each eye to the same side >10° on head imaging.
Results:
Thirty-five patients with acute cerebellar infarction were identified (22 men; age range, 37-85 years). No patients showed CED on neurological examination, but 13 (37%) had radiographic CED, mostly contralateral to the lesion. As for infract location, the posterior inferior cerebellar artery (PICA) territory (44% vs. 20%, p=0.18) and flocculonodular lobe and/or vermis (54% vs. 32%, p=0.20) tended to be more involved in patients with radiographic CED than in those without.
Conclusions:
Radiographic CED seems relatively common in patients with acute cerebellar infarction, particularly the PICA territory infarcts including the flocculonodular lobe and/or vermis.
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