ERU-32 Fetal Environment and Maternal Complications

Question 1

What is the maternal contribution to the placenta?

The fetal contribution?

Answer 1

Decidua basalis

chorion frondosum

Question 2

What are the 3 layers of the placenta?

Answer 2

(fetus) Chorionic plate > placental substance > basal layer (uterus)

Question 3

What is the maximum thickness of a placenta?

Answer 3

4cm

Question 4

What is the most common placental tumor?

What lab finding is associated?

Answer 4

Chorioangioma

Elevated afp

Question 5

From what does the umbilical cord develop?

Answer 5

Fusion of the Vitelline duct and the yolk stalk

Question 6

A mass that may be noted in the umbilical cord adjacent tot eh umbilical vessels

Answer 6

Allantoic cyst

Question 7

The focal dilation of the abdominal portion of the umbilical vein

Answer 7

Umbilical vein varix

Question 8

Most common tumor of the umbilical cord

Answer 8

Hemangioma: Solid hyperechoic mass located near the cord insertion site of the placenta

Question 9

TORCH infection

Answer 9

Toxoplasmosis
Other
Rubella
CMV (most common)
HSV

Question 10

Sonographic findings of TORCH infection

Answer 10

Intracranial calcifications
Microcephaly
Microphthalmia
Ventriculomegaly
Hepatosplenomegaly

Question 11

Sonographic findings of Fetal Alcohol Syndrome

Answer 11

Microcephaly
Dysgenesis of the corpus callosum
Long round philtrum
Malformed ears
Microphthalmia
Cleft palate
Heart defects (VSD)

Question 12

Fetal hydrops

Answer 12

Occurs when there is an accumulation of fluid within at least two fetal body cavities (pleural effusion, pericardial effusion, abdominal ascites)

Question 13

Maternal mirror syndrome

Answer 13

A condition in which the mother accumulates fluid similar to the hydropic fetus.