chronic bronchiolitis

Etiology

 pulmonary infections

• bronchiolar infections

 allergic reactions
 dysimmunity

• collagen vascular diseases

 bronchocentric granulomatosis
 allergic bronchopulmonary fungal disease
 distal to bronchiectasis
 inflammatory bowel diseases (IBDs)
 aspiration penumonia
 graft-versus host disease (pulmonary GVHD)
 Wegener granulomatosis
 acute bronchiolitis of unknown cause (idiopathic acute bronchiolitis)
 lymphoproliferative diseases

• BALT lymphoma

 respiratory bronchilitis
 chronic aspiration pneumonia
 nylon flock-associated interstitial lung disease
 localized inflammatory reaction

• right middle lobe syndrome

 unknown causes (idiopathic forms)

See also

 pulmonary lesions

• bronchiolar lesions

 granulomatous bronchiolitis