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A 62-year-old woman with a history of rheumatoid arthritis presents with insidious onset of painless proximal muscle weakness and atrophy. A serum CK is obtained and is normal. TSH is also normal. Her medication list includes lisinopril, aspirin, and prednisone. EMG shows short-duration motor unit potentials in the deltoids and quadriceps bilaterally. A muscle biopsy is performed. Which of the following will most likely be appreciated?
A lesion to which of the following arteries could produce the ischemic findings shown in the MRI below (Brain MRI, axial cuts. Left: DWI sequence. Right: ADC sequence).
Which of the following is the mechanism of action of entacapone?
Which of the following is the first branch of the internal carotid artery once it enters the skull?
Which of the following is the mechanism of action of prazosin?
A 42-year-old woman with major depressive disorder and anxiety who has recently completed treatment for gambling addiction presents with a unilateral upper extremity resting tremor and the feeling that she is “stiff all of the time”. Her husband remarks that she has become much more soft-spoken lately and that five years ago she began acting out her dreams. Which of the following medications should be avoided in this patient?
Identify the structures labeled in the image below:
Which of the following identifies the vein of Galen?
Which of the following arteries supplying the thalamus provides supply to the lateral geniculate nucleus (LGN)?
A two-week-old, full-term female with an uncomplicated delivery is brought to the clinic with abnormal jerky movements. Her father states that episodes occur right after the patient is put down for a nap, last for roughly 3 minutes, and resolve with arousal. During the episodes, the patient has rapid, repetitive myoclonic movements of her upper limbs. The physical exam is unremarkable. The patient was admitted to the Epilepsy Monitoring Unit where a typical event was captured and had no EEG correlate. Which of the following is the most likely diagnosis?
A 62-year-old man complains of 5 years of vivid dreams. At times this involves punching and kicking, which has hurt his wife. He undergoes a polysomnogram and there is no sleep-disordered breathing and the EEG is normal. What would be the best first-line medication to treat this behavior?
A blood clot in which artery explains the findings below?
You are asked to see a 64-year-old man with hypertension, hyperlipidemia, and peripheral vascular disease who is post-operative day 1 from an aortic aneurysm repair. On exam, he exhibits bilateral lower extremity weakness, as well as loss of pain and temperature sensation below the umbilicus. Light touch and proprioception are intact in the lower extremities. What is the most likely diagnosis?
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?
A 4-year-old male with no significant past medical history presents to the emergency room after experiencing a first-time seizure. An EEG is obtained and captures a seizure arising from the left hemisphere and polymorphic delta slowing on the same side. Over the next several months the child continues to experience focal-onset seizures despite being on 2 maximally-dosed seizure medications. His brain MRI, below, shows asymmetric left-hemispheric atrophy. His clinic presentation and imaging are most consistent with which of the following diseases?