Roberts sign (fetal demise)

Roberts sign refers to the presence of a gas shadow within the heart or the greater vessels, in cases of fetal death in utero. It is a rare sign caused by postmortem blood degeneration, usually seen 1-2 days after death; and may be seen as early as 12 hours.

History and etymology

First described as a sign on radiographs by J B Roberts in 1944 1; it was first described on ultrasound in 1983 by Barbara J Weinstein, American radiologist and Lawrence D Platt, American obstetrician 2.

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Article information

rID: 24475
System: Obstetrics
Section: Signs
Synonyms or Alternate Spellings:
  • Robert's sign

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Cases and figures

  • Case 1
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