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The majority of cases are small intestinal atresia, while colonic atresias are uncommon. [14] There have been two main etiologies proposed for intestinal atresia: the first is a lack of re-vacuolization of the solid cord stage of intestinal development, and the second is a late intrauterine mesenteric vascular accident.
Ileal atresia – malformation of the ileum, the lower part of the small intestine; Colon atresia – malformation of the colon; Malformations may also occur along multiple portions of the intestinal tract; for instance a malformation that occurs along or spans the length of the jejunum and the ileum is termed jejunoileal atresia. [5] [3]
Biliary atresia, also known as extrahepatic ductopenia and progressive obliterative cholangiopathy, is a childhood disease of the liver in which one or more bile ...
Esophageal atresia is a congenital medical condition (birth defect) that affects the alimentary tract. It causes the esophagus to end in a blind-ended pouch rather than connecting normally to the stomach .
Follicular atresia refers to the process in which a follicle fails to develop, thus preventing it from ovulating and releasing an egg. [1] It is a normal, naturally occurring progression that occurs as mammalian ovaries age.
Choanal atresia is diagnosed based on the inability to place a nasal catheter, and radiology results (particularly CT scans). Treatment involves maintaining an open airway, and may involve surgery to reopen the airway, potentially with a stent. Choanal atresia is a fairly rare condition, affecting between 1 in 7,000 to 1 in 5,000 live births.
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.
Incidence of congenital malformations associated with tracheal agenesis. Results were obtained from a total of 32 individual case studies. [11]The classic in-utero symptoms of tracheal agenesis are an absence of the trachea leading to congenital high airway obstruction syndrome, [12] [13] lung distention, polyhydramnios, heart malformations, heart displacement and hydrops fetalis.