Objective: The objective of the study is to analyse the sonographic features, cytogenetic results and pregnancy outcomes in complex malformations involving the body wall in a large cohort of fetuses with regard to different definitions proposed in the literature.
Method: A retrospective study on 96 fetuses with complex malformations comprising ventral wall, craniofacial structures, limbs and umbilical cord that were evaluated between 1997 and 2015.
Results: The most common sonographic finding was an extensive ventral wall defect (95.8%; 92/96) comprising liver (94.6%; 87/92), intestine (82.6%; 76/92), heart (17.4%; 16/92) and bladder (8.7%; 8/92). Acrania and encephalocoele were observed in 24 and 9 fetuses (25.0%, 24/96; 9.4%, 9/96), respectively. Limb anomalies were present in 54 fetuses (56.3%; 54/96). Rudimentary or absent umbilical cord was observed in 62 fetuses (64.6%; 62/96). In 79 fetuses, there were additional multiple structural anomalies detected prenatally. None of the currently used definitions encompasses all possible phenotypes of body wall defects present in our cohort. Chromosomal aberrations were seen in 8 out of 60 cases with conclusive cytogenetic result (13.3%, 8/60).
Conclusion: Chromosomal anomalies are common, and karyotyping should be offered. There is a need for a more rigorous classification of complex malformations in order to better understand the underlying pathophysiology. © 2017 John Wiley & Sons, Ltd.
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