The chorionic bump in an ectopic pregnancy

Benjamin E. Northrup, Robert D. Harris

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


The chorionic bump, an irregular, convex bulge of the choriodecidual surface into the gestational sac (GS), is a recently described, uncommon abnormality of the 1st-trimester GS and is associated with a guarded prognosis for early pregnancy. The case of this 42-year-old female demonstrates a previously unreported relationship: a transvaginal sonographic finding of a chorionic bump associated with a spontaneous tubal ectopic pregnancy. This might support the hypothesis that the chorionic bump represents a small hematoma that bulges into the GS.

Original languageEnglish
Pages (from-to)292-294
Number of pages3
JournalJournal of Clinical Ultrasound
Issue number5
StatePublished - Jun 2009


  • 1st-trimester sonography
  • Abnormal gestational sac shape
  • Chorionic bump
  • Ectopic pregnancy


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