Quiz 07/07/2022

A 38-year-old female presents for 5 weeks of worsening encephalopathy, and blurred vision. An MRI Brain with contrast is performed and shown below (T1 post-contrast, multiple axial sections). Of the following, what is the most likely diagnosis?

A 58-year-old male with a prolonged history of myasthenia gravis was recently discharged 4 months ago from the hospital with his second myasthenic crisis requiring transient intubation. Since that hospitalization, he was on prednisone, tapered down to 40 mg a day, cyclosporine and pyridostigmine. He comes to the ED today after having a generalized tonic-clonic seizure. On arrival to the ED, the patient is post-ictal and has vision deficits on exam. MRI of the brain shows T2 hyperintensities on the posterior cerebral hemispheres. Which of the following is the likely etiology of this clinical presentation?

A 43-year-old man with obesity and hypertension presents with complaints of excessive daytime sleepiness, gasping awakenings, and witnessed periods of not breathing during sleep. A polysomnogram is performed and confirms the presence of sleep-disordered breathing. What feature would point to a central rather than obstructive cause?

A 34-year-old male presents with personality changes that started after a motor vehicle accident-related traumatic brain injury. His family has noticed that since the accident, the patient no longer actively seeks out hobbies that he once enjoyed. He will often forget to eat meals unless prompted, even if the food is placed in front of him. Which of the following medications would most likely help with his behavior?

This brain biopsy is consistent with which of the following pathologies?

Identify the structure (blue arrow) shown below:

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?

Identify the pathological abnormality shown in the image below.

A 31-year-old female who recently delivered a healthy boy 3 days ago comes into the emergency room with a headache and vomiting. Other than requiring an epidural for pain management, the delivery of her child was uncomplicated. Her neurological exam is normal. A brain MRI was completed and is shown below (Left: T1, Right: T2 with contrast). Which of the following is the most likely diagnosis?

Which one of the following pairs regarding antipsychotic drugs and their adverse effects is incorrect?

A 26-year-old female presents with unilateral vision loss. She says that she noticed symptoms upon awakening yesterday morning and it has gotten progressively worse since then. On neurological examination, she has 20/70 visual acuity of the left eye and 20/20 of the right. There is a left afferent pupillary defect (APD). Extraocular movements are intact but cause pain. What is the most likely etiology of her symptoms?

A 19-year-old female with a past medical history of anorexia and insomnia presents with major depressive disorder. Which of the following medications is the most appropriate at this time?

A 4-year-old boy is in the hospital for headache and abdominal pain and is being treated by the pediatric service for possible constipation, for which they have given polyethylene glycol. You are consulted due to the new onset of inability to extend his left wrist. On exam, you note a bluish coloration of the gingiva.

A peripheral blood smear is requested and shows microcytic RBCs with basophilic stippling. Anemia in this disease is caused in part by inhibition of which of the following?

A 56-year-old man with idiopathic Parkinson’s disease presents to the emergency department for hypertensive emergency and tachycardia. You suspect that this may be an adverse effect related to one of his medications. Patients that are prescribed MAO-B Inhibitors should be counseled on avoiding which of the following?

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?

Socially inappropriate behavior, disinhibition, echopraxia, and utilization behavior are typically seen in which of the following?

A 65-year-old right-handed man presents with acute onset speech difficulties, a mild right-sided facial droop, and right-sided arm weakness. While talking to his wife over breakfast this morning he suddenly stopped speaking and could only make unintelligible sounds. On examination, he is unable to speak any words but has intact comprehension. He is able to write clearly what he wants in full sentences with intact grammar and reading is also preserved. Which of the following best describes his language deficit?

Which of the following areas, if selectively lesioned, would cause an error with voluntary vertical saccades with spared horizontal saccades and sparred occulocephalic vertical reflex?

A 75-year-old patient is brought in by her husband because of word-finding difficulty.  On cognitive testing, the most impressive finding was that the patient could not recall many colors of the rainbow. Based on this finding, what kind of memory is most impaired?

An 18-year-old boy had an MRI performed after experiencing a first-time seizure shown below. What genetic disorder could be the cause of the abnormalities appreciated on imaging?