Neurology Quiz #3: Neural Tube Defects and Disorders of Brain Development

1. A newborn is diagnosed with a neural tube defect characterized by protrusion of the meninges and spinal cord through a defect in the vertebral arches, but the overlying skin is intact. This defect is best classified as which of the following? 

Question 1 of 5

2. A pregnant woman's second-trimester ultrasound reveals that her fetus has a condition characterized by the absence of cerebral hemispheres, with intact meninges and skull. Which of the following conditions does this fetus most likely have? 

Question 2 of 5

3. During a routine prenatal visit, a fetal ultrasound at 18 weeks of gestation shows a lemon-shaped skull and banana-shaped cerebellum. Which of the following is the most likely diagnosis? 

Question 3 of 5

4. A newborn is diagnosed with a neural tube defect that has resulted in a failure of the forebrain to divide into two hemispheres. This condition is associated with a spectrum of facial anomalies. Which of the following is the most likely diagnosis? 

Question 4 of 5

5. A 2-week-old infant presents with a sac-like protrusion at the base of the skull and a history of difficulty swallowing and breathing. Imaging studies reveal herniation of the medulla oblongata and the cerebellar tonsils into the cervical spinal canal. Which of the following is the most likely diagnosis? 

Question 5 of 5


 

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