Rare diseases · Sign or symptom

Bronchiolitis obliterans

HP:0011946

What it means

Inflammation and fibrosis of the bronchioles leading to partial or complete obstruction of these airways.

Note that Bronchiolitis obliterans is not to be confused with the similarly named feature Bronchiolitis obliterans organizing pneumonia.

Rare diseases that can present with this2

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: Constrictive bronchiolitis · Obliterative bronchiolitis

Bronchiolitis obliterans

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This 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.