Decidual reaction

A decidual reaction is feature seen in very early pregnancy where there is a thickening of the endometrium around the gestational sac. A thin decidual reaction of less than 2 mm is considered one of the features suggestive of an anembryonic pregnancy 2. A decidual reaction in some situations can also occur in an ectopic pregnancy 3.

See also

Share article

Article information

rID: 15504
System: Obstetrics
Tag: stub, cases
Synonyms or Alternate Spellings:
  • Decidual reaction in pregnancy

Support Radiopaedia and see fewer ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.