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Duodenal atresia is the congenital absence or complete closure of a portion of the lumen of the duodenum. It causes increased levels of amniotic fluid during pregnancy ( polyhydramnios ) and intestinal obstruction in newborn babies.
The digestive tract was also often abnormal; duodenal atresia, pyloric hyperplasia, malrotation and common mesentery were present in about half of the patients. When the brain was examined, more than half were found to have Dandy–Walker anomaly and/or agenesis of the corpus callosum. A few patients demonstrated cloudy cornea.
Duodenal atresia; Ebstein's anomaly; Ectopia cordis; Encephalocele; Endocardial cushion defect; Esophageal atresia; Exstrophy of the bladder; Fetal alcohol syndrome;
The most common cause of non-duodenal intestinal atresia is a vascular accident in utero that leads to decreased intestinal perfusion and ischemia of the respective segment of bowel. [3] This leads to narrowing, or in the most severe cases, complete obliteration of the intestinal lumen .
Frontal view of the abdomen with double bubble sign, patient was found to have duodenal atresia. In radiology, the double bubble sign is a feature of pediatric imaging seen on radiographs or prenatal ultrasound in which two air filled bubbles are seen in the abdomen, representing two discontiguous loops of bowel in a proximal, or 'high,' small bowel obstruction.
Intestinal malrotation is a congenital anomaly of rotation of the midgut.It occurs during the first trimester as the fetal gut undergoes a complex series of growth and development.
Megaduodenum due to its duodenal ganglionitis is an unusual condition, Megaduodenum's similarity to megacolon and megaesophagus diseases can better explain the most plausible causes of it. [6] In addition, some theories state that megaduodenum can be associated with the following causes: post-vagotomy , vitamin deficiency , and collagen diseases .
Annular pancreas is a rare condition in which the second part of the duodenum is surrounded by a ring of pancreatic tissue continuous with the head of the pancreas.This portion of the pancreas can constrict the duodenum and block or impair the flow of food to the rest of the intestines.