From: Towards more accurate measurement of edge to os distance in low-lying placenta using three dimensional transvaginal ultrasound: an innovative technique
Placental location
n (%)
Anterior
3 (3.9%)
Anterior to the right
27 (35.5%)
Anterior to the left
14 (18.4%)
Posterior
Posterior to the right
10 (13.2%)
Posterior to the left
Right
7 (9.2%)
Left
2 (2.6%)