The Teaching Point

Meconium pseudocyst can be a secondary complication of ileal atresia in utero due to leakage of meconium into the peritoneal cavity. Fetal MRI is a useful adjunct in the assessment of abdominal cysts and bowel pathology, and in planning delivery and postnatal intervention including the need for postnatal imaging and surgical exploration.






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From the manuscript

Ileal Atresia with Meconium Peritonitis: Fetal MRI Evaluation

Free full text article: Ileal Atresia with Meconium Peritonitis: Fetal MRI Evaluation

Abstract
We report a case of ileal atresia with meconium peritonitis evaluated by fetal MRI. Prenatal ultrasounds in the third trimester initially demonstrated a cystic abdominal mass that resolved with development of dilated bowel loops. Fetal MRI at 32 weeks gestation identified a perihepatic collection with several dilated small bowel loops and normal sized meconium filled rectosigmoid consistent with distal bowel perforation and loculated meconium peritonitis. Following delivery, the infant presented with bowel obstruction. Contrast enema revealed a normal sized rectosigmoid with small ascending and transverse colon. A distal ileal atresia type IIIa was documented at surgery.






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1. Ileal atresia

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