Two retroplacental hematomas in 2nd trimester pregnancy

This 2nd trimester pregnancy has an anterior placenta on ultrasound imaging. 

Patient had a history of bleeding and pain. 

But look at the hypoechoic collection in the lower part of placenta:

It's small, but the ultrasound image above suggests a retroplacental hematoma 👆.

Another image of the hematoma 👆.

Let's have a look at the upper margin of the placenta: see ultrasound images below:

Another area of retroplacental hemorrhage. Color Doppler ultrasound shows no flow in area. 

Rules out a mass or venous lake. 

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Sonography of placenta