A 69-year-old man undergoes modified radical neck dissection for an oropharyngeal tumor. During the procedure, he requires multiple blood transfusions. Four hours after the surgery, examination shows that the right and left pupils do not constrict when a light is shone into the left eye. When light is shone into the right eye, both pupils constrict. Fundoscopic examination shows no abnormalities. Which of the following is the most likely location of the lesion?
ACiliary ganglion
BPretectal nuclei
CEdinger-Westphal nucleus
DOptic nerve
ESuperior cervical ganglion
A 45-year-old man is brought to the emergency department by ambulance after a motor vehicle collision. He is not responsive to verbal commands and is unable to provide any history. His pulse is 108/min and regular. Physical examination shows ecchymoses over the neck and back. Neurological examination indicates damage to the spinal cord at the level shown in the illustration. This patient's injury is most likely located at which of the following levels of the spinal cord?
AC2
BS2
CL4
DT6
ES4
A 72-year-old man presents to his primary care physician because he feels like his vision has been changing over the last 6 months. In particular, he feels that he cannot see as well out of his right eye as previously. His past medical history is significant for myocardial infarction as well as Lyme disease. On presentation, he is found to have a droopy right eyelid as well as persistent constriction of his right pupil. Additionally, the skin on his right half of his face is found to be cracked and dry. Which of the following is most likely associated with this patient's symptoms?
AOculomotor nerve damage
BDrug use
CSyphilis
DFacial nerve damage
EPancoast tumor
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