Rare diseases · Sign or symptom
Abnormal vena cava morphology
HP:0005345
What it means
An abnormality of the structure of the veins that return deoxygenated blood from the body into the heart, i.e., the superior vena cava and the inferior vena cava.
Rare diseases that can present with this6
Common30–79%
4The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
Also called: Abnormality of the vena cava
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.