A 46-year-old man presents with a 2-week history of right-sided neck pain following a motor vehicle accident. Vital signs show BP 138/82, HR 82, RR 16, and normal temperature. Examination reveals mild right ptosis, miosis, and anhidrosis of the right face. Brain MRI demonstrates a right lateral medullary infarct. Cranial nerves II through XII are otherwise intact. He denies diplopia or dysphagia. Which of the following best explains this clinical presentation?
- A)Lesion of the optic chiasm
- B)Compression of the oculomotor nerve by aneurysm
- C)Lesion of the sympathetic pathway to the eye and faceGABARITO
- D)Occlusion of the central retinal artery
- E)Damage to the facial nerve nucleus
Explicação
Lesion of the sympathetic pathway to the eye and face is the correct answer because Horner syndrome consists of ptosis, miosis, and anhidrosis from interruption of sympathetic innervation. Ver explicação completa e trilha adaptativa →