Placenta previa

- Incidence of fetal anomalies is almost double than normal population.

- Up to 15 % cases may have placenta accreta.

- Trans-abdominal scanning is associated with high false positive diagnoses.

- Trans-vaginal scanning is safe & superior to trns-abdominal.

- Placenta previa encroaching within 2 cm of the internal os in contra-indication to vaginal delivery.