Wax J R, Smith J F, Floyd R C
Department of Obstetrics and Gynecology, U.S. Naval Hospital, Portsmouth, VA 23708.
J Comput Assist Tomogr. 1994 Jan-Feb;18(1):152-4. doi: 10.1097/00004728-199401000-00034.
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.
单绒毛膜双胎妊娠的产前诊断对于双胎妊娠的最佳护理至关重要。当胎儿存在致死性畸形差异时，明确的确诊必不可少。对我们的患者进行超声评估显示，双胎妊娠存在无脑儿差异且可能为单绒毛膜双胎。当超声检查结果不明确时，CT羊膜造影证实为单羊膜腔，从而能够为父母提供恰当的咨询并进行妊娠管理。在怀疑单绒毛膜双胎且双胎存在致死性畸形差异时，CT羊膜造影是超声检查的一项有用辅助手段。
