Outcomes of pregnancies at high-risk for placenta accreta spectrum following negative diagnostic imaging.

Objectives: To assess the pretest and negative post-test probability for placenta accreta spectrum (PAS) in a group of patients with high-risk clinical factors.

Methods: We included patients with suspected and/or confirmed PAS at our institution over 8 years. Sonography performed by maternal-fetal medicine specialists, and selected patients underwent MRI.