Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Diffuse Panbronchiolitis
- Radiologic Findings
- Chest radiograph shows increased lung volume and multiple small nodular opacities in both lungs, which are predominant in both lower lobes. Mild bronchial dilatation with bronchial wall thickening is also seen. HRCT scan demonstrates bronchiectasis and bronchiolectasis with air trapping in both lower lobes. Centrilobular nodules and branching linear structures are also seen.
The patient's symptom and radiologic findings improved after medication with erythromycin. The diagnosis of diffuse panbronchiolitis was made based on clinical and radiological findings.
- Brief Review
- Clinical Manifestation
-middle aged men
-sinusitis (75%)
-superimposed infection: pseudomonas aeruginosa
-die within 5years of the onset (20%)
-Tx: long-term low dose erythromycin
Histology
-centrilobular peribronchiolar infiltrates of acute and chronic inflammatory cells, principally at the level of the respiratory bronchioles
-bronchiolar dilatation and intraluminal inflammatory exudates
Radiologic findings
Chest radiograph
- nonspecific
- small nodular shadows throughout both lungs
- increased lung volumes
Thin-section CT
- centrilobular branching opacities, tree-in-bud appearance
- bronchiolectasis
- bronchiectasis
- diffuse distribution/ basilar predominance
- air-trapping on expiration
- large lung volumes
- mosaic perfusion
- References
- Akira M, Higashihara T, Sakatani M, et al. Diffuse panbronchiolitis: follow-up CT examination. Radiology 1993;189:559-562
- Keywords
- Lung, Airway, Non-infectious inflammation,