USG examination of an 8 weeks pregnant female shows a gestational sac with absent fetal pas. The diagnosis is:

Anembryonic pregnancy (previously called blighted ovum) is an ultrasound diagnosis. It is a pregnancy in which the embryo fails to develop or is resorbed after loss of bility. On ultrasound, an empty gestational sac, smaller mean gestational sac diameter, absent fetal echoes and absent fecal cardiac movements is seen. Clinical presentation is similar to that of a missed or threatened aboion: Mild pain or bleeding may be present; however, the cervix is closed, and the nonble pregnancy is retained in the uterus. Ref: Textbook of Obstetrics D C Dutta, 6th edition, Page 162.