TY - CHAP M1 - Book, Section TI - The Anterior Abdominal Wall A1 - Wells, Robert G. PY - 2015 T2 - Diagnostic Imaging of Infants and Children AB - Omphalocele and gastroschisis are the 2 most common congenital abdominal wall defects. They are distinct genetic and clinical entities. With omphalocele, there is failure of the midgut to return to the intraembryonic coelomic cavity. The affected infant has herniation of abdominal viscera into the base of the umbilical cord. The herniated organs are contained within a sac consisting of parietal peritoneum and amnion. A small omphalocele may contain only intestine, whereas a larger defect sometimes includes herniation of the liver. With gastroschisis, there is herniation of abdominal contents through a defect in the abdominal wall located to the right of an intact umbilical cord. There is no enveloping sac with gastroschisis, and the herniated intestine moves freely in amniotic fluid.1 SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/11/09 UR - accesspediatrics.mhmedical.com/content.aspx?aid=1148946359 ER -