title: Isolated superior rectus palsy due to contralateral midbrain infarction.
abstract: BACKGROUND
  Isolated superior rectus palsy due to a contralateral midbrain lesion has not been reported.
  
  
  METHODS
  A 71-year-old woman suddenly developed diplopia. Examination showed that she had isolated superior rectus paresis. Magnetic resonance imaging showed a tiny infarct at the area of the oculomotor nucleus on the contralateral side.
  
  
  CONCLUSIONS
  Isolated superior rectus palsy may be caused by a contralateral midbrain lesion that selectively involves crossing superior rectus nerve fibers.
authors: Departments of Neurology, College of Medicine, University of Ulsan, Asan Medical Center, Seoul, Korea.
authors: Jee-Hyun
authors: JH
authors: Kwon
authors: Sun U
authors: SU
authors: Kwon
authors: Hyo-Sook
authors: HS
authors: Ahn
authors: Ki-Bum
authors: KB
authors: Sung
authors: Jong S
authors: JS
authors: Kim
mesh_terms: D000368:Aged; D020520:Brain Infarction / Q000150:complications*; D048909:Diabetes Complications; D004172:Diplopia / Q000150:complications; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications; D018810:Magnetic Resonance Angiography; D008636:Mesencephalon / Q000473:pathology; D009801:Oculomotor Muscles / Q000294:innervation; D015840:Oculomotor Nerve Diseases / Q000209:etiology* / Q000503:physiopathology