A 38-year-old man presents with acute inability to look to the right, right facial droop, and right arm and leg weakness. Vital signs show BP 158/92 mmHg, HR 88, RR 16, temperature 37.2°C, SpO2 98% on room air. Brain MRI demonstrates a left ventromedial midbrain infarct. Laboratory studies reveal elevated fasting glucose at 126 mg/dL. He denies diplopia. Which of the following structures is damaged?
- A)Right superior colliculus and right oculomotor nerve
- B)Left medial lemniscus and left rubrospinal tract
- C)Left trigeminal nerve and left spinothalamic tract
- D)Right abducens nerve and right corticospinal tract
- E)Left oculomotor nerve and corticospinal tractGABARITO
Explicação
This is Weber syndrome: ventromedial midbrain lesion on the left damages the left oculomotor nerve (CN III) causing ipsilateral eye adduction paralysis and thus inability to look toward the side of lesion (looks away from lesion side—right). The corticospinal ... Ver explicação completa e trilha adaptativa →