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Diagnosis of Umbilical Cord Entanglement of Monoamniotic Twins by First‐Trimester Color Doppler Imaging
Author(s) -
Sherer David M.,
Sokolovski Margarita,
Haratz-Rubinstein Nathan
Publication year - 2002
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.7863/jum.2002.21.11.1307
Subject(s) - medicine , conjoined twins , gestation , obstetrics , umbilical cord , color doppler , fetus , cord , pregnancy , ultrasonography , anatomy , radiology , surgery , genetics , biology
Monoamniotic twins occur in approximately 5% of monochorionic twin gestations as a result of splitting of the inner cell mass at 8 or more days after fertilization, and they are associated with high perinatal mortality rates, ranging between 28% and 47%. These gestations have unique pathologic conditions, including conjoined twins, a high prevalence of discordancy for fetal structural anomalies (the former and possibly also the latter resulting from consequences of the twinning process), and cord entanglement. We present a case in which monoamniotic twins at first-trimester transvaginal sonography were confirmed by color Doppler imaging as having entangled umbilical cords.