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Accreta placentation

Ultrasound signs: Loss of the clear zone, myometrial thinning

Loss of the clear zone

  • The hypoechoic retroplacental zone is not visible. This sign is found in about 70% of cases.

Myometrial thinning

  • The myometrium under the placenta measures <1 mm or becomes undetectable. This sign is found in about 50% of affected cases.