CASE 118
History: A 24-year-old patient undergoes routine second-trimester ultrasound.
1. What should be included in the differential diagnosis? (Choose all that apply.)
B. Ovarian cyst
C. Urachal cyst
2. All of the following statements concerning the umbilical cord or umbilical vein and arteries are true except:
A. There are two arteries in the umbilical cord.
B. Umbilical arterial flow is away from the fetus.
C. Umbilical venous flow is toward the fetus.
D. There are two vessels within the umbilical cord.
3. All of the following statements concerning the umbilical vein varix are true except:
A. Umbilical vein varix is not always an isolated abnormality.
B. An association of umbilical vein varix and chromosomal abnormalities has been reported.
C. Normal umbilical vein size is approximately 8 mm at 20 weeks’ gestation and 16 mm at term.
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