Congenital pseudoaneurysm of mitral-aortic intervalvular fibrosa masquerading as left atrial mass in fetal life.
A 28-week-old fetus was detected to have a single left atrial mass in prenatal ultrasound. Postnatal echocardiography showed an aneurysm between the anterior mitral leaflet and aortic valve, to the left of atrioventricular junction and communicating with the left ventricle through a narrow mouth. It probably originated from the mitral-aortic intervalvular fibrous tissue and an inherent weakness at this site might be the cause. Reported cases of pseudoaneurysm of mitral-aortic intervalvular fibrosa and subvalvular ventricular aneurysms seen following infective endocarditis, surgery, or trauma seem to have a similar anatomical background. This case explains the possibility of congenital aneurysm in this location which needs to be considered a differential diagnosis in similar cases.
Fetal Cardiology Unit and Pediatric Cardiac Services, Mediscan Systems, Chennai, Tamil Nadu, India.
Shanthi
S
Chidambarathanu
Fetal Cardiology Unit and Pediatric Cardiac Services, Mediscan Systems, Chennai, Tamil Nadu, India.
Vijayalakshmi
V
Raja
Fetal Cardiology Unit and Pediatric Cardiac Services, Mediscan Systems, Chennai, Tamil Nadu, India.
Indrani
I
Suresh
Aorto-mitral valvular curtain; fetal echocardiography; left atrial aneurysm; left atrial mass; mitral-aortic intervalvular fibrosa