Blighted ovum is characterized by:
A blighted ovum is a feilized egg that implants but does not develop. In a blighted ovum, a gestational sac forms and grows; however, the embryo does not develop. So blighted ovum is also known as Anembryonic pregnancy. Blighted Ovum - Criteria Mean sac diameter >=25 mm No yolk sac/ Embryo seen Avascular Villi Non Viable Pregnancy
Avascular villi
Syncytial knot
Intervillous haemorrhage
Intracerebral haemorrhage
Diagnosis of Pregnancy