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A 7-year-old girl presents with 2 weeks of a right-sided unilateral throbbing headache. She has otherwise been healthy with no other symptoms and has no past medical history except for a light pink birthmark around her right eye. What is the most appropriate next step?
Motor unit action potential (MUAP) conduction velocities of a newborn are what percentage of an adult?
Which of the following findings is depicted in the catheter angiogram shown?
The MR angiogram shown below demonstrates which of the following?
A 69-year-old female is brought to the emergency room by her daughter for excessive stumbling, often tripping on things on the floor. The daughter also says her mother has been behaving oddly, complaining about seeing darkness in a fully lit room, and the inability to recognize her family members. Bilateral pupillary light reflexes are normal. If symptoms are secondary to an ischemic injury, an MRI would show a lesion in which of the following regions?
A 32-year-old female who is currently 39 weeks pregnant was brought to the emergency room after experiencing a first-time seizure. Neurological examination is non-focal except for mild somnolence and decreased visual acuity in both eyes. Vitals signs were normal except for a blood pressure of 192/104 mmHg. An MRI was performed and shown below. Which of the following is the most appropriate step in management?
A 46-year-old female presents to the clinic with right-hand numbness, specifically in the 4th and 5th digits. EMG testing reveals fibrillations on the first dorsal interosseous, and flexor pollicis longus. EMG testing of the abductor pollicis brevis and triceps was unremarkable. These findings are most likely caused by radiculopathy of which of the following nerve roots?
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?
The pathology shown in the image below is most likely which of the following?
A 4-month-old boy is brought by his parents due to difficulty in feeding, and episodes of apnea. Physical examination reveals tongue fasciculations, a bulging anterior fontanelle, and an abducens nerve palsy. MRI reveals an Arnold Chiari malformation type II. What additional defect is this child likely to have?