<prompt> Pseudogestational sac seen in ultrasonography of:Missed abortionEctopic gestationComplete abortionHematometra  <response>: 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. 