RT Book, Section
A1 Volpe, Paolo
A1 Paladini, Dario
A1 De Robertis, Valentina
A1 Rossi, Cristina
A1 Rembouskos, Georgios
A2 Fleischer, Arthur C.
A2 Toy, Eugene C.
A2 Lee, Wesley
A2 Manning, Frank A.
A2 Romero, Roberto J.
SR Print(0)
ID 1106707089
T1 FETAL GASTROINTESTINAL ANOMALIES
T2 Sonography in Obstetrics and Gynecology: Principles & Practice, 7e
YR 2015
FD 2015
PB McGraw-Hill Education
PP New York, NY
SN 9780071547727
LK obgyn.mhmedical.com/content.aspx?aid=1106707089
RD 2024/04/24
AB DefinitionsAtresia:  derives  from  greek  α-τρησιαwhich  means  absence  of  perforation.  In  a  gastrointestinal  atresia  there  is  an  interruption  of  the  lumen  continuity  at  some  point  of  the  gastrointestinal  "tube",  with  eventual  dilation  of  the  proximal  blind  end.  The  most  frequent  gastrointestinal  atresias  are  represented  by  esophageal,  duodenal,  and  anal  atresia.Omphalocele  and  gastroschisis:  they  both  derive  from  greek  ομϕαλο-κηλη  and  γαστρο-σχισιç  which  respectively  mean  "protrusion  (of  an  intra-abdominal  structure)  through  the  umbilical  cord  insertion"  and  "tear  of  the  abdominal  wall".  In  both  cases  it  results  in  herniation  of  parts  of  the  gastrointestinal  structures  through  the  fetal  abdominal  wall.  In  omphalocele  the  herniated  structures  are  covered  from  the  peritoneum  and  the  umbilical  cord's  amnion.  In  gastroschisis,  the  herniated  structures  are  in  direct  contact  with  the  amniotic  fluid.Physiologic  herniation  of  the  bowel-normal  process  in  which  a  loop  of  the  midgut  herniates  into  the  proximal  part  of  the  umbilical  cord  (physiologic  exomphalos)  due  to  the  relatively  reduced  intraabdominal  space,  usually  from  7th  to  11th  week  of  gestation.  At  around  11  menstrual  weeks  the  midgut  has  completely  re-entered  into  the  fetal  abdomen.