Exxcellence pearls: placentomegaly

Question 0

What is the differential diagnosis for a thin placenta?

Answer 0

Fetal growth restriction, chromosome anomalies, infection, diabetes mellitus

Question 1

How is normal placental thickness calculated?

What is normal placental thickness at term?

Answer 1

Equal to gestational age in mm in weeks plus or minus 10 mm.

4 cm

Question 2

What a evaluation should be performed for placentomegaly?

Answer 2

Anatomical survey by ultrasound, fetal karyotyping, and screening for diabetes mellitus, infections, anemia, placental abruption.

Question 3

What is the differential diagnosis for a thick placenta? (Separated into heterogeneous and homogeneous echotexture)

Answer 3

Heterogeneous echotexture: molar pregnancy, triploidy, placental hemorrhage, mesenchymal dysplasia.
Homogeneous echotexture: diabetes mellitus, anemia, infection with villitis, aneuploidy