Quiz 06/01/2022 (1)

A 57-year-old male with a past medical history of progressive weakness affecting all extremities and dysphagia for the past 6 months is admitted to the hospital. An EMG was completed as part of his workup and is shown below. Based on the available information what is the most likely diagnosis?

A 40-year-old male is referred to the clinic for a one-year history of progressive weakness of the upper and lower extremities. Past medical history is impressive for thrombocytopenia, anemia, and hepatosplenomegaly. Neurological examination shows 2/5 strength in the distal lower limbs bilaterally with diminished ankle and patellar reflexes. The sensory exam shows diminished vibratory and pinprick sensation in both legs. He also has a markedly orange discoloration of his tonsils. Genetic testing is performed which reveals a mutation in the ABCA1 gene. Which of the following is the most likely diagnosis?

Which of the following symptoms can be seen with MCA-PCA watershed infarcts?

Motor unit action potential (MUAP) conduction velocities of a newborn are what percentage of an adult?

A 42-year-old man with a 6-month history of progressive muscle weakness has a nerve biopsy performed. Based on the toluidine blue (left) and trichrome (right) stain slides shown, which of the following is the most likely diagnosis?

Identify the tract marked by the red arrow in the spinal cord diagram below.

Which of the following findings is depicted in the MR Angiogram shown below?

A thin 28-year-old male presents to the clinic with complaints of foot drop. On exam, he has a right foot drop as well as numbness on the lateral aspect of the right lower leg. You suspect compression of a nerve at the fibular head. Malfunction of which of the following nerves causes the foot drop itself?

Parents bring their 3-year-old son to the clinic for difficulty walking. On examination, the patient has a waddling gait and enlarged calf muscles. When rising from a seated position he has to rely extensively on his arms to stand up. Which of the following is the most likely inheritance pattern of the genetic disorder affecting this patient?

An MRA is ordered for a patient presenting with an acute stroke. Based on the lesion appreciated in the image below (white arrow), what symptom is likely to be seen on examination?

Which of the following can not passively diffuse across the blood-brain barrier?

Which of the following medications are known to develop neutralizing antibodies (NAbs) against it with chronic use?

Which of the following vessels that supply the thalamus originates from the P2 segment of the posterior cerebral artery and supplies the medial geniculate nucleus?

What is the anatomical structure labeled “C” below?

A 32-year-old female presents to the emergency room after a motor vehicle accident as a restrained back seat passenger. Her only complaint on arrival is back pain. She has bruises across her abdomen and chest and a normal neurological exam. Thoracic spine imaging was completed and is shown below. Which of the following is the most likely diagnosis?