Monoamniotic twins discordant for anencephaly: diagnosis by CT amniography.
Prenatal diagnosis of monoamnionicity is necessary for optimal care of a twin gestation. When the fetuses are discordant for a lethal anomaly, unequivocal confirmation is imperative. Ultrasound evaluation of our patient revealed a twin gestation discordant for anencephaly and with possible monoamnionicity. When sonography was inconclusive, CT amniography confirmed a single amniotic cavity, permitting appropriate parental counseling and pregnancy management. CT amniography is a useful adjunct to ultrasound in evaluating twins discordant for a lethal anomaly when monoamnionicity is suspected.
Wax
J R
JR
Department of Obstetrics and Gynecology, U.S. Naval Hospital, Portsmouth, VA 23708.
Smith
J F
JF
Floyd
R C
RC
D000328:Adult; D000650:Amnion; D000653:Amniotic Fluid; D000757:Anencephaly / Q000000981:diagnostic imaging*; D004200:Diseases in Twins; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D011296:Prenatal Diagnosis / Q000379:methods*; D014057:Tomography, X-Ray Computed