Abstract
BackgroundCongenital megaduodenum is a rare disorder; however, its prenatal diagnosis has not been reported previously. We report the case of an abdominal cystic mass in a fetus that was later diagnosed as megaduodenum.Case presentationAn abdominal cystic mass was found during ultrasonography of a fetus at 11 weeks of gestation. The mass progressively enlarged with gestation. The amniotic fluid volume decreased and then returned to normal. During the last prenatal ultrasound examination, the mass was observed communicating with the stomach; therefore, duodenal dilation was suspected. Finally, the patient was diagnosed with megaduodenum caused by a developmental defect in the nerve plexus.ConclusionsCongenital megaduodenum is a differential diagnosis of massive fetal abdominal cystic masses. Ultrasound examinations of such masses communicating with the stomach may help determine the diagnosis.
Highlights
Congenital megaduodenum is a rare disorder; its prenatal diagnosis has not been reported previously
Congenital megaduodenum is a differential diagnosis of massive fetal abdominal cystic masses
Ultrasound examinations of such masses communicating with the stomach may help determine the diagnosis
Summary
Congenital megaduodenum is a rare disorder; its prenatal diagnosis has not been reported previously. Conclusions: Congenital megaduodenum is a differential diagnosis of massive fetal abdominal cystic masses. Ultrasound examinations of such masses communicating with the stomach may help determine the diagnosis. We report the case of an abdominal cystic mass in a fetus detected at 11 4/7 weeks of gestation that was later diagnosed as megaduodenum following postnatal surgery and histopathological examination.
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