Evidence that difference in size of fraternal twins may originate during early gestation: a case report.
We describe a woman who conceived by in vitro fertilization (IVF) and embryo transfer (ET). Transvaginal ultrasound demonstrated at least 1 week's difference in size of twin gestations from 1 month post-transfer of embryos to delivery. Differences in sac size, crown-rump length, and gestational growth are discussed, as are implications of ultrasound in early pregnancy.
University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, Camden.
J H
JH
Check
J S
JS
Chase
K
K
Nowroozi
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G
Goldsmith
C
C
Dietterich
D000328:Adult; D005314:Embryonic and Fetal Development / Q000502:physiology*; D005260:Female; D006801:Humans; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014429:Twins, Dizygotic; D016216:Ultrasonography, Prenatal