Prenatal diagnosis of atrial septal aneurysm.
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.
Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan.
Jeng-Hsiu
JH
Hung
Jen-Her
JH
Lu
Chia-Yi Selena
CY
Hung
D000328:Adult; D054087:Atrial Septum / Q000000981:diagnostic imaging*; D005260:Female; D005318:Fetal Heart / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D006322:Heart Aneurysm / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D011379:Prognosis; D016216:Ultrasonography, Prenatal