Empty amnion sign

The empty amnion sign is a sonographic observation where there is visualization of an amniotic sac without concomitant visualization of an embryo. It is an indicator pregnancy failure regardless of the mean sac diameter and is considered to have a sufficiently high positive predictive value 2.  

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Article Information

rID: 15186
System: Obstetrics
Section: Signs
Tags: stub, cases
Synonyms or Alternate Spellings:
  • Empty amnionitc sac sign

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