CASE 61
L = liver.
History: A patient presents with a third-trimester, large-for-dates gestation.
1. What should be included in the differential diagnosis for the ultrasound findings in Figure A? (Choose all that apply.)
A. A large amount of peritoneal fluid from fetal hydrops
B. A large amount of peritoneal fluid from cystic hygroma with diffuse lymphatic obstruction
C. A large amount of peritoneal fluid from obstruction by a mass not seen in these images
2. What is one of the earliest ultrasound findings of nonimmune hydrops?
A. A large amount of peritoneal fluid
C. Enlarged nuchal translucency at 9 weeks’ gestation
3. How does the Doppler tracing of the umbilical artery (Figure B) help in the diagnosis of this case of nonimmune hydrops?
A. Fetal tachyarrhythmia (trigeminy)
C. Fetal tardus parvus waveform
D. A Doppler tracing does not help narrow the cause of nonimmune hydrops.
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