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PurposeTo evaluate the role of transperineal ultrasound (TPS) in the detection of morphological and vascular manifestations of placenta previa (PP)/accreta and to compare it with transabdominal sonography (TAS) and transvaginal sonography (TVS), with the clinical outcomes as the reference standards.Materials and methodsTPS, TVS, and TAS were carried on 134 patients after 28weeks’ gestation presented with antepartum hemorrhage. The final diagnosis was obtained from the obstetrician at time of delivery and from histopathological reports.ResultsOne hundred and three patients had PP, the sensitivity, specificity, and accuracy in diagnosing PP were 97.1%, 75% and 94% for TPS, 94.2%, 75% and 91.5% for TAS, and 98.1%, 93.8% and 97.4% for TVS respectively. PP accreta was present in 39 patients. The sensitivity, specificity, and accuracy in diagnosing PP accreta were 89.7%, 100% and 96% for TPS, 87%, 95% and 92.2% for TAS, and 94.9%, 100% and 98% for TVS respectively.ConclusionTPS is a valuable approach for evaluating patients with high risk of PP & PP accreta, it is a safe, rapid, & accurate technique with little patient discomfort

Role of transperineal sonography in diagnosis of placenta previa/accreta: A prospective study