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Start free with EleplanPersistent eustachian valve
ORPHA:99120Morphological anomaly
What it is
A rare congenital anomaly of the inferior vena cava characterized by the postnatal presence of an eustachian valve remnant, which may be asymptomatic and considered a normal variant or prominent and clinically significant. Clinical presentation is variable and includes obstruction of the inferior vena cava, cyanosis, thrombosis, pulmonary embolism, infective endocarditis, and when combined with persistent foramen ovale, it may generate permanent right-to-left shunt.
Key facts
- Classified as
- Morphological anomaly
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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