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The lesion shown below is most consistent with which of the following pathologies?
A 65-year-old woman with a past medical history of hypertension presents with recent onset of bilateral eye discomfort and diplopia. She states that she is unable to completely close her eyes. On exam, pain is elicited when testing extraocular movements. Visual acuity and visual fields are unremarkable. MRI of the brain reveals excessive peri-orbital subcutaneous tissue bilaterally. Which of the following is the most likely diagnosis?
A 6-month-old male is admitted to the ED for acute respiratory failure. On examination, he has generalized weakness, diffuse hypotonia, and areflexia. He was admitted to the pediatric Intensive Care Unit and intubated. A chest X-ray showed a narrow chest. EMG/NCS was performed showing axonal motor polyneuropathy with tongue fasciculations and signs of chronic denervation. What is the most likely pathologic etiology causing this presentation?
A patient with a history of a right shoulder anterior dislocation comes to the clinic with the chief complaint of right arm numbness. On examination, there is a loss of sensation to light touch on the lateral portion of the upper arm. Based on the sensory disturbance, which of the following nerves is most likely injured?
Which of the following can not passively diffuse across the blood-brain barrier?