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The electrographic pattern appreciated in the 6th second of this recording likely represents which of the following?
A 65-year-old man with a past medical history of chronic liver disease and diabetes presents with progressive falls and a tremor. On exam, he is rigid throughout with significant gait instability, a tendency to turn his head to the right, and a hypertrophied left sternocleidomastoid muscle. He fails initial treatment with carbidopa-levodopa. His brain MRI reveals T1 hyperintensities of the bilateral globi pallidi. Which of the following is the most likely diagnosis?
Which of the following combinations of tumor genetic markers carry the most favorable prognostic value for anaplastic astrocytoma?
A 48-year-old woman presents with acute onset of seizures, myoclonus, ataxia, and rapidly progressive dementia. CSF analysis reveals an elevated protein and mild pleocytosis. Brain MRI with and without contrast is unremarkable. Further investigation reveals elevated thyroid-stimulating hormone levels and anti-thyroid peroxidase antibodies. Which of the following is the most appropriate therapy?
A 32-year-old male comes into the headache clinic for severe headaches. They occur several times a day and last approximately one hour. They are only felt on the left side of his head, and he says he gets a runny nose and a little teary during the episodes. What is a notable side effect of the prophylactic medicine that is considered first-line therapy for this condition?
What is the earliest NCS/EMG abnormality found in AIDP?
A 16-year-old male with no significant past medical history presents to the emergency room with vision complaints and coordination issues. Four days ago, he began experiencing double vision and since then has had progressive difficulty picking up objects and buttoning his shirts. On physical exam, the patient has a decreased range of motion of the extraocular muscles bilaterally, as well as areflexia and ataxia when walking. What is the most likely diagnosis?
An 85-year-old man presents back to your clinic for follow-up with his family for a slowly progressive neurologic decline over the past 4 years, namely with memory and cognitive decline. You have already performed a brain MRI and additional testing and suspect that the patient has Alzheimer’s dementia. The family expresses concerns over the patient’s driving. Which of the following, if true, is not a useful tool to identify driving risk according to updated practice guidelines?
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?
A 57-year-old male with recently diagnosed small cell lung cancer (SCLC) is presenting to the electromyography lab with a one-month history of muscle cramps and muscle pain. Percussive myotonia is appreciated on examination. Electromyography showed myokymic discharges. Autoantibodies against which of the following channels are likely present in this case?