A 30-year-old woman presents with acute-onset diplopia and gait imbalance. Vital signs: BP 118/76, HR 88, RR 16, Temp 37.2°C, SpO2 98%. On neurologic exam, leftward gaze produces failure of right eye adduction with left eye abducting nystagmus; convergence remains intact. Brain MRI reveals periventricular T2 hyperintensities. She denies prior neurologic symptoms. Which of the following best explains these findings?

  1. A)Optic neuritis
  2. B)Transverse myelitis
  3. C)Amyotrophic lateral sclerosis
  4. D)Multiple sclerosis
  5. E)Internuclear ophthalmoplegia from medial longitudinal fasciculus lesionGABARITO

Explicação

This eye movement pattern is internuclear ophthalmoplegia caused by a lesion of the medial longitudinal fasciculus. In a young adult woman, demyelination from multiple sclerosis is the classic cause of this finding. Ver explicação completa e trilha adaptativa →

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