Question

Sonographic findings associated with placenta accreta include all of the following, except:________.

a. Loss of the hypoechoic interface between the placenta and myometrium

b. Placental lucunae

c. Interruption of the bladder/uterine interface

d. Placenta previa

e. Polyhydramnios

Answer 1

e. Polyhydramnios

Step-by-step explanation:

Some features of placenta accreta on ultrasound are:

- loss of the normal hypoechoic plane in the myometrium beneath the placental bed

- presence of multiple placental lacunae

- loss of the normal hyperechoic line separating the urinary bladder wall from the uterus

- thinning of the myometrium to <1 mm

- bulging of the placenta into surrounding organs adjacent to the uterus, causing a mass-like lesion protruding out from the uterine wall

- When a placenta accreta occurs on the posterior or lateral walls of the uterus, it may be difficult to detect by ultrasound.