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What are the 3 most common causes of bacterial meningitis in neonates (0-1 months)?
A 40-year-old with AIDs (CD4 count 60) presents to the emergency room with a 2-month history of progressive headache, confusion, and left sided weakness. MRI brain with and without contrast was performed and it showed ring-enhancing lesions in the basal ganglia and the right frontal lobe. A brain biopsy was performed and shown below. Which is the most likely diagnosis?
A 42-year-old welder complains of a one-year history of progressive resting tremor, shuffling gait, and drooling. He consults a physician because of frequent falls and worsening fatigue. A diagnosis of a particular type of metal toxicity was made and treatment is started. Which of the following would most likely be found if an MRI brain if ordered?
Identify the finding noted with a blue arrow.
A patient with medically refractory epilepsy secondary to mesial temporal sclerosis recently had a right hemispheric anterior temporal lobectomy. He is complaining of a post-operative visual field deficit. Which of the following is most likely to be appreciated on the exam?
The MR angiogram shown below demonstrates which of the following?
Which of the following is most often associated with late-onset Alzheimer’s disease?
Which of the following is the mechanism of action of prazosin?
A 66-year-old male presents to the emergency room as an unrestrained driver in a motor vehicle accident. While initially only complaining of mild neck pain, within 30 minutes of the collision he started to experience bilateral numbness in his hands and significant symmetric upper limb weakness. Soon thereafter, the weakness extended down to his lower extremities. Neurologic examination is remarkable for loss of pain and temperature sensation in his bilateral upper extremities and symmetric bilateral upper extremity greater than lower extremity weakness. Which of the following is the most likely diagnosis?
A 39-year-old male presents to the clinic for hallucinations. His medical history is only remarkable for a chemical accident at his job resulting in severe corneal scarring bilaterally, for which he now requires a seeing-eye dog.
His hallucinations are usually of tall figures dressed in black with long fingers. He is not frightened by this because he knows they are not real. He denies other neurologic deficits, denies auditory hallucinations and describes his mood as “good”. The rest of his exam is normal.
You are familiar with the underlying syndrome the patient is experiencing. You inform the patient that in the rest of the population the most common cause of this syndrome is actually…
A 56-year-old woman with recent open-heart surgery develops sudden onset, painless right eye vision loss. On funduscopic examination, the optic disc appears swollen and pale. No other significant findings were appreciated on the funduscopic exam. Damage to which of the following structures is the most likely cause of the patient’s symptoms?
A 50-year-old man presents with slowly progressive cognitive decline and personality changes. Over the past several months, he has been having trouble remembering the names of relatives/close friends and he has also become more apathetic. He is known to have trisomy 21. His exam is notable for memory deficits, but no rigidity or tremor. What is the name of the region of the brain that synthesizes the neurotransmitter that is decreased in this patient’s disease?
Sleep spindles can be asynchronous until what age?
Which of the following is the reversal agent for apixaban?
A 21-year-old male with a history of cirrhosis, dysarthria, and personality changes was brought to the emergency room after experiencing a 20-minute episode of right-sided weakness. An MRI was performed to evaluate for a possible stroke. An axial cut of a FLAIR sequence is provided below. What is the likely diagnosis of the patient’s chronic illness?