Rare diseases · Sign or symptom
Abnormal sternum morphology
Abnormality of the sternum
HP:0000766
What it means
An anomaly of the sternum, also known as the breastbone.
Rare diseases that can present with this23
Very common80–99%
5Common30–79%
8- FG syndrome type 1
- Jeune syndrome
- Kyphoscoliotic Ehlers-Danlos syndrome
- Microcephaly-seizures-intellectual disability-heart disease syndrome
- Progressive spondyloepimetaphyseal dysplasia-short stature-short fourth metatarsals-intellectual disability syndrome
- Recombinant 8 syndrome
- RIN2 syndrome
- Takenouchi-Kosaki syndrome
The 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: Pectus carinatum or pectus excavatum · Pectus deformities · Pectus deformity · Pectus excavatum or carinatum · Pectus excavatum or pectus carinatum · Pectus excavatum/carinatum · Sternal anomalies
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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.