Amniography for confirming the diagnosis of monoamniotic twinning. A case report.

In a case of monoamniotic twinning, amniography was used to confirm the diagnosis. This modality, old but now employed infrequently, helps establish the absence of a dividing membrane and complements currently used ultrasound diagnostic methods. A successful outcome resulted.

Diagnosis of vasa previa with ultrasonography.

An antepartum diagnosis of vasa previa was considered in a patient in whom ultrasound revealed pulsatile loops of cord overlying the cervical os. This diagnosis was confirmed at the time of cesarean delivery. We offer a literature review of vasa previa and make recommendations for using ultrasonography to diagnose vasa previa.