Rare diseases · Sign or symptom
Abnormality of the maxillary sinus
Abnormality of the upper jaw sinus
HP:0430023
What it means
An abnormality of the maxillary sinus, one of the mucosa-lined, normally air-filled paranasal sinuses of the bones of the skull. The maxillary sinus is located within the skeleton of the midface, lateral to the nasal cavity.
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: Abnormality of the antrum of Highmore · Abnormality of the maxillary antrum
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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.