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 Volume 67, Number 7, October 10, 2006
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NEUROLOGY 2006;67:1178-1183
© 2006 American Academy of Neurology

Cerebellar infarction presenting isolated vertigo

Frequency and vascular topographical patterns

H. Lee, MD, S. -I. Sohn, MD, Y. -W. Cho, MD, S. -R. Lee, MD, B. -H. Ahn, MD, B. -R. Park, MD and R. W. Baloh, MD

From the Department of Neurology (H.L., S.-I.S., Y.-W.C.), Brain Research Institute (H.L., S.-I.S., Y.-W.C., S.-R.L.), and Otorhinolaryngology (B.-H.A.), Keimyung University School of Medicine, Daegu, South Korea; Department of Physiology, Medicine, and Hanbang Brain Disease Research Center (B.-R.P.), Wonkwang University School of Medicine, Iksan, South Korea; and Department of Neurology, Division of Surgery (Head and Neck) (R.W.B.), UCLA School of Medicine, Los Angeles, CA.

Address correspondence and reprint requests to Dr. Hyung Lee, Department of Neurology, Keimyung University School of Medicine, 194 Dongsan dong, Daegu, 700-712 South Korea; e-mail: hlee{at}dsmc.or.kr

Objective: To determine the frequency of cerebellar infarction mimicking vestibular neuritis (VN), the pattern of clinical presentation, and the territory of the cerebellar infarction when it simulates VN.

Methods: We studied 240 consecutive cases of isolated cerebellar infarction in the territories of the cerebellar arteries diagnosed by brain MRI from the acute stroke registry at the Keimyung University Dongsan Medical Center.

Results: We identified 25 patients (10.4%) with isolated cerebellar infarction who had clinical features suggesting VN. Two types of cerebellar infarction simulating VN were found: isolated spontaneous prolonged vertigo with imbalance as a sole manifestation of cerebellar infarction (n = 24) and isolated spontaneous prolonged vertigo with imbalance as an initial manifestation of cerebellar infarction (n = 1) followed by delayed neurologic deficits 2 days after the onset. The cerebellar infarction territory most commonly involved was the medial branch of the posterior inferior cerebellar artery territory (24/25: 96%), followed by the anterior inferior cerebellar artery territory (1/25: 4%). None of patients with infarcts in the territory of the superior cerebellar artery or multiple cerebellar arteries showed isolated spontaneous prolonged vertigo.

Conclusions: Cerebellar infarction simulating vestibular neuritis is more common than previously thought. Early recognition of the pseudo-vestibular neuritis of vascular cause may allow specific management.

Disclosure: The authors report no conflicts of interest.

Received February 21, 2006. Accepted in final form June 12, 2006.


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