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Placental Abnormalities

For which situation is pathological examination of the placenta considered most informative and cost effective?

a. Multifetal gestation

b. Cholestasis of pregnancy

c. Maternal seizure disorder

d. All obstetrical deliveries

At term, which of the following most closely approximates typical placental disk measurements?

a. 200 g weight, 10 cm diameter, 15 mm thickness

b. 500 g weight, 20 cm diameter, 25 mm thickness

c. 1000 g weight, 15 cm diameter, 35 mm thickness

d. 1500 g weight, 25 cm diameter, 45 mm thickness

Which of the following terms describes this surface of the placenta?

a. Basal plate

b. Amniochorion

c. Placental bed

d. Chorionic plate

This is which type of placental variant?

a. Bilobate placenta

b. Succenturiate lobe

c. Placenta fenestrata

d. Circumvallate placenta

Which placental variant is marked by arrowheads in this image?

Used with permission from Dr. Heather Lytle.

a. Bilobate placenta

b. Succenturiate lobe

c. Placenta fenestrata

d. Circumvallate placenta

Compared with a normally shaped placenta, which complication of third-stage labor is more common with an undiagnosed succenturiate lobe?

a. Cord avulsion

b. Chorioamnionitis

c. Uterine inversion

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