Pseudogestational sac seen in ultrasonography of:: (A) Missed abortion, (B) Ectopic gestation, (C) Complete abortion, (D) Hematometra
Answer is B. When ultrasound examination reveals a sac without an embryo or yolk sac, the diagnosis is limited to one of three entities:

A normal early intrauterine pregnancy (IUP).
An abnormal intrauterine pregnancy (IUP).
A pseudogestational sac in a patient with an ectopic pregnancy.