absence of innominate vein
MONDO:0020443Mondo
Findings
No curated finding names absence of innominate vein yet. Everything below is reference data from Mondo, HPO and GenCC, not evidence about what affects it.
Definition
Absence of innominate vein is a rare congenital anomaly of the great veins characterized by absence of the left brachiocephalic vein (or innominate vein), resulting in an anomalous venous vasculature. Patients are usually asymptomatic and the anomaly is typically discovered intraoperatively. An association with persistence of left superior vena cava, permanent levoatrial cardinal vein or anomaly of the inferior vena cava has been reported in some cases.
Definition from the Mondo Disease Ontology (MONDO:0020443), read 2026-09-29. CC BY 4.0.
Where it sits
Other names
1 name
Resolves to: absence of innominate vein
- Also called
- absence of brachiocephalic vein