Concordant Body Stalk Anomalies in Dichorionic Twins

Iba, Takahiro; Harada, Takashi; Iba, Yumiko; Nishikori, Kyoko; Iwabe, Tomio; Harada, Tasuku; Mio, Y.

doi:10.7863/ultra.15.12053

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…It seems to be more common in twin pregnancies. Previous reports showed a large abdominal wall defect and herniation of the liver, bowels, or heart into the exocoelom [12][13][14]. However, none of the cases showed conjoined intestine or fused skin bridge, in contrast to the present case.…”

Section: Discussioncontrasting

confidence: 81%

Three-dimensional ultrasonographic features of diamniotic conjoined twins with body stalk anomaly

Xiang

Wen

Zhang

et al. 2020

BMC Pregnancy Childbirth

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Background: Since conjoined twins were thought to be monoamniotic in the past, diamniotic conjoined twins would be improbable theoretically. Body stalk anomaly is a severe defect of the body wall, which is rare among twins. Body stalk anomaly in monochorionic diamniotic conjoined twins has never been reported prenatally so far as we know. Case presentation: Here we present an extremely rare case of concordant body stalk anomaly in monochorionic diamniotic conjoined twins. Ultrasonography at 9 + 5 weeks revealed one chorionic and two amniotic cavities, close apposition of abdomen, limited movement, and common umbilical vessels. Follow-up ultrasonography at 11 + 6 weeks and 13 + 2 weeks showed close apposition of the lower abdominal region with cystic structures and a small bowel-like mass between the two fetuses. Three-dimensional ultrasonography assisted in observing the entire appearance of both twins in earlier first trimester, including amnioticity, conjoined region and umbilical vessels. We attribute this diamniotic conjoined twin in our case to the fusion theory. A single yolk sac was observed, challenging the idea that yolk sac number predicts amnionicity. Identification of single yolk sac and its allantois may form a common body stalk during this fusion, leading to concordant body stalk anomaly in monochorionic diamniotic twins. Conclusions: Our case may provide important insights into both ultrasonographic features and embryogenesis of this extremely rare anomaly.

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Section: Discussioncontrasting

confidence: 81%

Three-dimensional ultrasonographic features of diamniotic conjoined twins with body stalk anomaly

Xiang

Wen

Zhang

et al. 2020

BMC Pregnancy Childbirth

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show abstract

Section: Discussionmentioning

confidence: 99%

“…BSA was first reported in 1906 as a pathologic entity in a neonate with an abdominal wall defect, evisceration of abdominal organs, and an absent UC. 8 Because of the diverse phenotypes among reported cases, terms such as amniotic band syndrome and LBWC have also been used to describe the condition. Van Allen et al 6 proposed that a diagnosis of BSA should meet at least two of the following three criteria: exencephaly/encephalocele with facial clefts, thoracoschisis and abdominoschisis (midline defect), and a limb defect (e.g., clubfoot, polydactyly, oligodactyly, syndactyly, brachydactyly, or amelia).…”

Section: Discussionmentioning

confidence: 99%

First trimester diagnosis of body stalk anomaly complicated by ectopia cordis

Yang

Wang

et al. 2020

J Int Med Res

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Body stalk anomaly is a rare abnormality characterized by an abdominal wall defect with evisceration of abdominal organs, severe kyphoscoliosis, and a very short or absent umbilical cord. Ectopia cordis (EC) is a rare, lethal anomaly characterized by complete or partial malpositioning of the heart outside of the thorax. A 28-year-old healthy primigravida was referred to our department to undergo a nuchal translucency thickness scan at 12 weeks’ gestation. The scan revealed typical features of body stalk anomaly and EC. Given the lethal condition of the fetus, the patient opted for termination of the pregnancy. Body stalk anomalies, especially those complicated by EC, are universally lethal for the affected fetus. Selective termination should be recommended to avoid possible complications that can arise during pregnancy. Additionally, the future parents should be informed that because the condition is not associated with chromosomal abnormalities, there is no increased risk of recurrence.

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Anatomy‐based diagnostic criteria for complex body wall anomalies (CBWA)

Martín‐Alguacil

2020

Molec Gen & Gen Med

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There is no consensus on the definition and classification of complex body wall anomalies (CBWA). Recently an anatomical and embryological criteria was used to classify body wall anomalies with multiple congenital anomalies in the pig (Martín-Alguacil & Avedillo, 2020a). Body stalk anomalies (BSA) were considered when there is a body wall anomaly, skeletal abnormalities, and the umbilical cord is anomalous, absent or rudimentary, and limb body wall complex (LBWC) when there is a body wall and structural limb anomalies with or without craniofacial abnormalities. The proposed

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Concordant Body Stalk Anomalies in Dichorionic Twins

Cited by 3 publications

References 8 publications

Three-dimensional ultrasonographic features of diamniotic conjoined twins with body stalk anomaly

Three-dimensional ultrasonographic features of diamniotic conjoined twins with body stalk anomaly

First trimester diagnosis of body stalk anomaly complicated by ectopia cordis

Anatomy‐based diagnostic criteria for complex body wall anomalies (CBWA)

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