CASE 53
History: A patient presents for a routine ultrasound scan at 20 weeks’ gestation.
1. What should be included in the differential diagnosis of Figure A? (Choose all that apply.)
D. Semilobar holoprosencephaly
2. Which of the following is not a true statement concerning choroid plexus cysts?
A. These cysts are most frequently benign findings.
B. These cysts are often transient findings and resolve by the third trimester.
C. These cysts may be either unilateral or bilateral.
D. These cysts are associated with an increased risk of bilateral hydrocephalus.
3. Which of the following is not a typical feature of trisomy 18?
A. Fixed position of the fetal fingers
B. Abnormally shaped fetal head
C. Umbilical cord with two vessels
D. A sandal gap between the first and second toe
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