Prenatal diagnosis of atrial septal aneurysm

Jeng Hsiu Hung, Jen Her Lu, Chia Yi Selena Hung

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


We report the prenatal diagnosis of fetal atrial septal aneurysm based on the observation of a fluttering flap in the left atrium. The aneurysm was associated with an interatrial communication. In a 4-chamber view, separate arms of the aneurysm could be seen contracting in and extending out in response to the fetal cardiac cycle, giving the fluttering appearance of a jellyfish. The aneurysm disappeared 1 month after birth with no complications. The findings in this case indicate that isolated atrial septal aneurysm is a natural transient phase of spontaneous closure of the foramen ovale during normal fetal development.

Original languageEnglish
Pages (from-to)51-52
Number of pages2
JournalJournal of Clinical Ultrasound
Issue number1
Publication statusPublished - Jan 2008
Externally publishedYes


  • Atrial septal aneurysm
  • Fetal heart

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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