Kisho is an information platform, not a medical provider. Nothing on this site constitutes medical advice, diagnosis, or treatment recommendations. All content is aggregated from publicly available sources (including ClinicalTrials.gov, PubMed, FDA.gov, and Orphanet) and is provided for informational purposes only. Clinical trial eligibility, treatment decisions, and any health-related actions should always be discussed with a qualified healthcare professional. Kisho does not endorse any specific therapy, organization, or clinical trial. Terms of use · Privacy policy
Congenital unguarded mitral orifice is a rare, congenital, mitral valve malformation characterized by complete absence of mitral valve leaflets and tensor apparatus at the mitral annulus, which can present clinically with cyanosis, heart murmur, electrocardiogram abnormalities, mild cardiomegaly, or congestive heart failure. Association with heterotaxy, discordant atrioventricular connections, double-outlet right ventricle, pulmonary atresia or stenosis, thin left ventricular wall, and hypoplastic left heart syndrome has been reported.
Data assembled from 2 of 12 sources · Last updated Sep 18, 2026, 11:35 PM UTC
European rare disease database
Genetic and Rare Diseases Info Center