Focal retroplacental mass/bulge that is isoechoic to the uterus. Differential considerations include:
Follow-up was performed to confirm the diagnosis of uterine contraction. Note the resolution of the retroplacental bulge on follow-up imaging.
Doppler assessment is also useful (not shown here):
- hematoma- there is no Doppler flow
- uterine contraction- increased RI
- myoma - little Doppler flow