Oral poster abstracts hysterectomy were analyzed in respect to the presence/absence of antenatal diagnosis, the topographic assessment and the management of the placenta at delivery. Results: Seven out of these 16 women had antenatal diagnosis. Elective Cesarean delivery was planned in all, hysterectomy to follow in five (four elective, one emergency preterm), and elective placental separation in two. When an antenatal diagnosis was not made (n = 9), placental separation was attempted at delivery leading to emergency hysterectomy in all (p = 0.001). Antenatal screening and diagnosis allowed topographic assessment and planned management, leading to a decrease in mean blood loss (1.4 L vs. 3.6 L, p = 0.003) especially when the placenta was not separated at delivery in extensive accreta (mean blood loss 1.0 L vs. 3.4 L, p < 0.001, mean units of blood transfused 1.2 vs. 5.1, p = 0.005). Conclusion: In placenta accreta, antenatal screening and diagnosis allows topographic assessment and avoidance of placental separation in extensive cases, resulting in improved maternal outcomes.