Ultrasound diagnosis of dicephalic conjoined twins at 24 weeks of gestation

Sabih, Durre; Sabih, Zahida; Worrall, Joseph A.; Khan, Ali

doi:10.1002/jcu.20646

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…Then she was referred to us for evaluation of mild polyhydramnios. Ultrasound diagnosis of such an obvious and gross anomaly should be straightforward and it seemed difficult to understand how such a dramatic abnormality could be missed on repeated ultrasound examinations, but such a case is not an isolated case as we reported another dicephalic fetus that went unreported until 28 weeks [27]. Others have reported a false negative diagnosis of a pyopagus tetrapus parasitic twin on three scans, being confirmed only at 28 weeks on the fourth exam [28], several other 3rd trimester diagnoses were also reported [29, 30].…”

Section: Discussionmentioning

confidence: 99%

Ultrasound diagnosis of cephalopagus conjoined twin pregnancy at 29 weeks

Sabih¹,

Ahmad²,

Sabih³

et al. 2010

Biomed. Imaging Interv. J.

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The authors report a case of a cephalopagus conjoined twin that was diagnosed at 29 weeks of gestation despite the mother having had two ultrasounds done previously. The fetus had one head and face, fused thoraces, common umbilicus but had two pelvises and two sets of genitalia. The fetus had four normally formed legs and arms.Antenatal ultrasound images are supplemented by post natal photographs. A review of literature, clues to ultrasound diagnosis and possible causes of missing this significant abnormality until the 3rd trimester are discussed.

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Section: Discussionmentioning

confidence: 99%

Ultrasound diagnosis of cephalopagus conjoined twin pregnancy at 29 weeks

Sabih¹,

Ahmad²,

Sabih³

et al. 2010

Biomed. Imaging Interv. J.

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show abstract

“…Ultrasound criteria for the diagnosis of conjoined twins in the second and third trimesters are well established and include the lack of an inter‐twin membrane and the inability to separate similar segments of the fetal body 5, 6. Suspicion of conjoined twins can arise as early as 7 weeks of gestation according to Hill 7.…”

Section: Discussionmentioning

confidence: 99%

First‐trimester diagnosis of conjoined twins aided by spatiotemporal image correlation

Varma

Waalwyk

Menahem

et al. 2011

J of Clinical Ultrasound

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“…The ultrasound criteria for CTs in the second and third trimesters have been well-established. Ultrasonographic identification of any of the classical signs including lack of separating membrane, inability to separate fetal bodies, and two or more vessels in cord may suggest the diagnosis of CTs [50,51].…”

Section: Maternal Agementioning

confidence: 99%

Conjoined twins after frozen embryo transfer: a case report and literature review

Xu¹,

Wei²,

Xiang³

et al. 2017

Clin. Exp. Obstet. Gynecol.

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Objective: To present a case of conjoined twins (CTs) in a triplet pregnancy after frozen blastocyst transfer and a literature review. Design: Case report. Setting: Reproductive medicine center of a university teaching hospital. Case Report: A 24-year-old patient underwent in vitro fertilization (IVF) and received two frozen blastocyst transfers. Sequential examination by transvaginal ultrasonography and transvaginal multifetal pregnancy reduction were performed during early pregnancy. Ultrasound images of the fetus in the gestational sac were assessed. Two gestational sacs were found in the uterus at 30 days after the embryo transfer (ET). A germ with primitive heart beat was observed in each sac. At the seventh week of gestation, one heart was still observed in each sac. At the tenth week, a single fetus was observed in one sac, whereas thoracopagus CTs with one heartbeat were seen in the other sac. Selective fetal reduction of the CTs was performed at the 11 th week. Unfortunately, abortion occurred at the 20 th week because of premature rupture of membranes. Conclusions: The authors presented a case of CTs that occurred after the transfer of two frozen blastocysts, and suggested that factors such as ovulation induction, intracytoplasmic sperm injection (ICSI), preimplantation genetic diagnosis (PGD), culture time and culture condition, assisted hatching and blastocyst transfer, and maternal age might be responsible for the CTs. The importance of early transvaginal ultrasound in pregnancies resulting from assisted reproductive technologies (ARTs) is emphasized. Selective embryo reduction is an appropriate choice for the management of these pregnancies.

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Ultrasound diagnosis of dicephalic conjoined twins at 24 weeks of gestation

Cited by 3 publications

References 15 publications

Ultrasound diagnosis of cephalopagus conjoined twin pregnancy at 29 weeks

Ultrasound diagnosis of cephalopagus conjoined twin pregnancy at 29 weeks

First‐trimester diagnosis of conjoined twins aided by spatiotemporal image correlation

Conjoined twins after frozen embryo transfer: a case report and literature review

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