A 66-year-old man presented with a downbeat nystagmus. The underlying cause was unknown. A dolichoectasia of the vertebrobasilar artery was the only identifiable abnormality at Magnetic Resonance Image which also disclosed distorsion of the anterolateral aspect of the medulla. Compression of the caudal brain-stem by an enlarged and tortuous vertebrobasilar arterial system may be the cause of downbeat nystagmus in cases unassociated with the more commonly recognized causes.
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Takeuchi, Satoru
Takasato, Yoshio
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Takasato, Yoshio
Masaoka, Hiroyuki
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Masaoka, Hiroyuki
Hayakawa, Takanori
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Hayakawa, Takanori
Otani, Naoki
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Otani, Naoki
Yoshino, Yoshikazu
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Yoshino, Yoshikazu
Yatsushige, Hiroshi
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan
Yatsushige, Hiroshi
Sugawara, Takashi
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Natl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, JapanNatl Hosp Org Disaster Med Ctr, Dept Neurosurg, Tachikawa, Tokyo 1900014, Japan