Accessory mitral valve tissue

A congenital non-syndromic heart malformation characratized by an accessory mitral valve leaflet or various accessory mitral valve structures. It may be asymptomatic or present at various ages with symptoms of left ventricular outflow tract obstruction, low cardiac output due to subaortic obstruction or congestive heart failure. In some cases, it may be a source of cardioembolism. The malformation may be isolated or associated with other congenital heart malformations.

Ventricular septal defect

A hole between the two bottom chambers (ventricles) of the heart. The defect is centered around the most superior aspect of the ventricular septum.


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PMID (PMCID)
31020159
 OTHER
A rare case of accessory mitral valve tissue causing left ventricular outflow tract obstruction associated with parachute mitral valve, ventricular septal defect, bicuspid aortic valve, unruptured aneurysm of aortic sinus: a case report.
Li Y, Hu Y, Wang J, Liu L.
Eur Heart J Case Rep. 2018;2(3):yty082.
A rare case of accessory mitral valve tissue causing left ventricular outflow tract obstruction associated with parachute mitral valve, ventricular septal defect, bicuspid aortic valve, unruptured aneurysm of aortic sinus: a case report.
12541101
 FEMALE Infant, Newborn
A neonate with mitral stenosis due to accessory mitral valve, ventricular septal defect, and patent ductus arteriosus: changes in echocardiographical findings during the neonatal period.
Ito T, Okubo T.
Heart Vessels. 2002;17(2):83-5.
Transaortic resection of accessory mitral valve tissue was performed with patch closure of the ventricular septal defect and ligation of the ductus arteriosus 35 days after birth.
10522797
 FEMALE Infant, Newborn
Accessory mitral valve tissue causing severe subaortic stenosis with dextrocardia in a premature newborn.
Bilal MS, Oztunc F, Besikci R, Bilal S, Ozkara A, Olga R.
Thorac Cardiovasc Surg. 1999;47(4):252-5.
The accessory mitral valve tissue and its fibrous extension were excised and the ventricular septal defect was closed.
10522797
 FEMALE Infant, Newborn
Accessory mitral valve tissue causing severe subaortic stenosis with dextrocardia in a premature newborn.
Bilal MS, Oztunc F, Besikci R, Bilal S, Ozkara A, Olga R.
Thorac Cardiovasc Surg. 1999;47(4):252-5.
We report an unusual case of left-ventricular outflow obstruction caused by accessory mitral valve tissue associated with dextrocardia and ventricular septal defect in a seven-day-old, 2200 grams premature infant, who was referred with a heart murmur.