DMS 132 Chapter 63 Fetal abdomen

Peritoneal calcifications are noted in a 30-week fetus. This may represent:

meconium peritonitis

Which statement about the fetal liver is incorrect?

The right lobe is larger than the left lobe

The distinction of the large bowel from the small bowel is possible as early as:

24 gestational weeks

The normal diameter of the fetal small bowel is less than or equal to:

5mm

Which statement about the fetal stomach is incorrect?

An esophageal anomaly is the most common cause of non visualization of the stomach

A remnant of the proximal part of the yolk stalk is:

Meckel's diverticulum

The most common malformation of the midgut is:

Meckel's diverticulum

A cystic growth of the common bile duct is :

a choledochal cyst

A complex disorder of the bowel and genitourinary tract is called:

anorectal atresia

Coexisting anomalies of fetuses with esophageal atresia include all except which of the following?

ascites

The most reliable criterion for diagnosing dilated bowel is:

bowel diameter

The derivatives of the hindgut include all except which of the following?

cecum

Causes of the double bubble sign include all except which of the following?

choledochal cyst

Haustral folds can be found within the:

colon

Sonogaphic criteria for choledochal cyst include all except which of the following?

decrease in size of a cyst and gallbladder on serial examinations

A fetus with dilated loops of echogenic bowel should be evaluated for all of the following except:

duodenal artresia

Causes of echogenic areas in the fetal abdomen may be all except which of the following?

duodenal artresia

In a tranverse image, evidence of a double bubble in a fetus with Trisomy 21 represents:

duodenal artresia

VACTERAL is a group of anomalies associated with:

esophageal artresia

Which of the following describes situs inverses?

heart on the right; liver on the left; spleen on the right

The sono appearance of the normal esophagus in the 2nd & 3rd trimester appears as a:

multilayered pattern

Transposition of the liver and stomach, absence of the gallbladder, multiple spleens, and disruption of the inferior vena cava describes:

polysplenia

The spleen is visualized on transverse plane, just:

posterior and left of the stomach

A sonolucent band identified near the fetal abdominal wall represents:

pseudoascities

A fetus with partial situs inversus demonstrates the:

stomach on the left, heart on left