Key result
Echocardiography and cardiac MRI identify reverse atrioventricular valve offsetting in a pediatric patient.
Why the study?
Reverse offsetting of the atrioventricular valves, where the mitral valve attachment is more apical than the tricuspid valve at the crux of the heart, has only been reported on rare occasions.
Case Report (n=1)
This case report highlights reverse offsetting of atrioventricular valves as a rare anatomical variant in the setting of atrioventricular and ventriculo-arterial concordance without mitral Ebstein's anomaly, diagnosed via transthoracic echocardiography and cardiac MRI.
Answers are grounded in this paper and cite their sources.
Reverse offsetting warrants awareness during pediatric echocardiography to avoid misdiagnosis; extends the anatomical spectrum but leaves open its prevalence and clinical relevance.
Background: Normal offsetting of atrioventricular (AV) valves describes a situation where the tricuspid valve (septal leaflet) is more apically placed than the mitral valve (anterior mitral leaflet) at the crux of the heart, or anatomical hinge point. Reverse offsetting, where mitral valve attachment is more apical, has been reported in some rare occasions. Case Presentation: We present the case of a 5-year-old boy, where the anterior mitral leaflet was apically displaced as compared to the septal leaflet of the tricuspid valve, in the background of atrioventricular and ventriculo-arterial concordance, in the absence of Ebstein’s anomaly of the mitral valve. The diagnosis was established by transthoracic echocardiography and cardiac magnetic resonance imaging. Conclusion: Reverse offsetting is a rare anatomical variant, especially in the presence of ventriculo-arterial concordance.
No takes yet. Share an insight, caveat, or question.
Laha et al. (2026) conducted a case report in Congenital heart disease with reverse offsetting of septal attachment of atrioventricular valves (n=1). Transthoracic echocardiography and cardiac magnetic resonance imaging was evaluated on Diagnosis of reverse offsetting of atrioventricular valves. Transthoracic echocardiography and cardiac MRI identified reverse offsetting of atrioventricular valves in 1 5-year-old boy with ventriculo-arterial concordance.
Synapse has enriched 10 related papers. Consider them for comparative context: