Chapter 62: The Fetal Abdomen

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1

asplenia

no development of splenic tissue

2

choledochal cyst

cystic growth of the common bile duct

3

cholelithiasis

gallstones

4

cystic fibrosis

congenital condition characterized by mucous buildup within the lungs and other areas of the body

5

duodenal atresia

complete blockage at the pyloric sphincter

6

duodenal stenosis

narrowing of the pyloric sphincter

7

esophageal atresia

congenital hypoplasia of the esophagus; usually associated with a tracheoesophageal fistula

8

esophageal stenosis

narrowing of the esophagus, usually in the distal third segment

9

gastroschisis

abnormality of the abdominal wall in which the bowel, without a covering membrane, protrudes outside of the wall

10

haustral folds

one of the sacculations of the colon caused by longitudinal bands that are shorter than the gut

11

Hirschsprung’s disease (megacolon)

a congenital disorder in which there is abnormal innervation of the large intestine

12

jejunoileal atresia

blockage of the jejunum and ileal bowel segments that appears as multiple cystic structures within the fetal abdomen

13

Meckel’s diverticulum

remnant of the proximal part of the yolk stalk

14

meconium ileus

small-bowel disorder marked by the presence of thick echogenic meconium in the distal ileum

15

omphalocele

abnormality of the abdominal wall in which bowel and liver, both covered by a membrane, protrude outside the wall

16

partial situs inversus

condition in which only the heart or the abdominal organs are reversed (dextrocardia or liver on the left, stomach on the right)

17

peristalsis

movement of the bowel

18

polysplenia

more than one spleen; associated with cardiac malformations

19

pseudoascites

sonolucent band near the fetal anterior abdominal wall from the abdominal wall muscles in the fetus over 18 weeks (does not outline the falciform ligament or bowel as ascites will)

20

situs inversus

heart and abdominal organs are completely reversed

21

VACTERL

vertebral defects, heart defects, renal and limb abnormalities