Rare diseases · Sign or symptom
Narrowing of medullary canal
HP:0032458
What it means
A reduction in diameter and volume of the central cavity of bone where red or yellow bone marrow is located.
Rare diseases that can present with this1
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: Medullary cavity obliteration · Narrowing of bone marrow canal · Narrowing of bone medullary canal · Narrowing of the marrow cavity
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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.