Pitfalls in sonographic evaluation of placenta accreta spectrum

Placenta accreta spectrum (PAS) is a serious complication of pregnancy. Preoperative diagnosis improves outcome for both mother and infant therefore it is critical that obstetric imagers are aware of the signs of the disease and know how to avoid pitfalls in diagnosis. This article reviews and illustrates the sonographic signs that are most helpful in detection of PAS and provides tips on avoiding pitfalls in diagnosis.