gastroschisis
Pronunciation: gas-TROS-ki-sis
A congenital abdominal wall defect where intestines protrude through an opening beside the umbilicus without a covering membrane.
Full Definition
Gastroschisis is a congenital anomaly characterized by a full-thickness defect in the anterior abdominal wall, typically located to the right of the umbilicus. Unlike omphalocele, the herniated bowel is not covered by a peritoneal sac or membrane, leaving it exposed to amniotic fluid throughout gestation. This exposure can lead to bowel inflammation, thickening, and shortening. The condition occurs in approximately 1 in 2,000-5,000 births and is associated with young maternal age. Prenatal diagnosis is usually made by ultrasound in the second trimester, and delivery planning involves coordination with pediatric surgery teams for immediate postnatal management.
Usage
Usage note: Frequently confused with omphalocele; key difference is absence of covering membrane in gastroschisis.
In Context
- "The 20-week anatomy scan revealed gastroschisis with bowel loops floating freely in the amniotic fluid." — Ultrasound report
- "Unlike omphalocele, gastroschisis does not have a covering membrane over the herniated bowel." — Medical education material