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This gross microscopic image is most consistent with which of the following diseases?
A 24-year-old female with a past medical history of major depressive disorder with her last major depressive episode 6 months ago is brought to the emergency room by her boyfriend because of unusual behavior. For the past 4 weeks, the patient has had bizarre delusions, auditory hallucinations, and disorganized speech. She believes that her boyfriend is having a sexual relationship with a character from one of the early morning soap operas on television. Outside of her psychiatric symptoms, her neurologic examination is normal. Which of the following is the most likely diagnosis?
A 3-day-old male infant is evaluated in the NICU for fever and focal seizures. He was born at 39 weeks gestation via uncomplicated vaginal delivery and had good APGAR scores. Brain imaging shows periventricular calcifications and severe ventriculomegaly. Auditory testing also demonstrates bilateral hearing impairment. What is the most likely cause of the patient’s symptoms?
A 78-year-old patient with a history of multiple system atrophy (MSA) presents to your clinic for falls. The patient states that while standing he initially experiences feelings of lightheadedness and tunnel vision before a loss of consciousness. While on the ground he will be “twitching” for 30 seconds before he regains consciousness. Which of the following tests is the most likely to be diagnostic in this case?
A 37-year-old man with a history of hypertension presents to the emergency department with a one-day history of difficulty walking. On examination, he has right leg paresis and hyperreflexia with a right-sided Babinski response. His non-contrast axial CT scan is shown below. Which of the following is the most likely etiology of this patient’s symptoms?
A 35-year-old Dominican Republic immigrant is brought to the emergency room for a first-time seizure. He is currently back to baseline and has a normal neurological exam. His only complaint is a multiple-month history of chronic headaches. A head CT scan is performed and shown below. Which of the following is the most likely etiology of his symptoms?
Which of the following is the most classic finding of early inclusion body myositis?
A patient with a history of low back pain had an MRI of their lumbar spine completed as part of their workup. The T2 FLAIR image of the lumbar spine MRI is shown below. What is the most likely diagnosis?
A 32-year-old female with a history of schizophrenia is brought to the emergency room by her husband for acute psychosis. She receives a medication while in the emergency room to aid in her agitation. Soon after administration, the patient develops involuntary contractions of muscles of her face and neck. Which of the following medications was most likely administered to cause these symptoms?
A 13-year-old male with a recent history of acute disseminated encephalomyelitis (ADEM) presents to the clinic for post-hospital follow-up. He has made a near-complete recovery from his illness but his parents want to know what is his risk of recurrence. What is the most accurate statement you can share with the parents?
A 72-year-old man with a history of right-sided carotid stenosis was transferred from an outside hospital to your institution to have a carotid stent placed after experiencing a mild right-hemispheric ischemic stroke. The patient was sent to the angiography lab and had a carotid stent placed, however, it was done so on the unaffected (left) side. What is this an example of?
What is the mechanism of action of abciximab?
Initiation of urination involves which of the following physiologic processes?
A 15-day-old female is evaluated in the NICU after being born to a G2P2 mother. On exam, the infant is jaundiced. Abdominal ultrasound shows severe hepatosplenomegaly. CT scan of the head shows hydrocephalus and periventricular calcifications, and a fundoscopic exam shows bilateral chorioretinitis. Serological testing is most likely to show infection with which organism?
Which of the following features on EMG is suggestive of chronic denervation?