agenesis of the superior vena cava
Findings
No curated finding names agenesis of the superior vena cava yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Agenesis of the superior vena cava (SVC) is a rare congenital anomaly of the great veins characterized by unilateral or bilateral complete absence of the SVC. Unilateral agenesis is mainly asymptomatic (most of the time diagnosed incidentally) and patients usually have otherwise normal heart structure. Bilateral agenesis, however, is frequently associated with other congenital cardiac anomalies and/or conduction abnormalities (such as tetralogy of Fallot, atrial septal defect) and typically present symptoms of SVC syndrome.
Definition from the Mondo Disease Ontology (MONDO:0020445), read 2026-09-29. CC BY 4.0.
Where it sits
Other names
5 names
Resolves to: agenesis of the superior vena cava
- Also called
- absence of the superior caval veinabsence of the superior vena cavaabsence of the SVCagenesis of the superior caval veinagenesis of the SVC