Table 1.

Features of bronchiolitis obliterans.

Feature	Bronchiolitis obliterans
Onset	After first year
Clinical feature	Insidious cough, wheeze, and shortness of breath
Chest X-ray	Hyperinflation
Pulmonary function test	Fixed airflow limitation and reduced diffusion capacity
Cat scan	Air trapping, mosaic pattern, reticular infiltrate, bronchiectasis with bronchial wall thickening
Lavage	Neutrophil predominant
Biopsy	Inflammation and scarring sparing the alveoli and alveolar duct

The treatment ranges from supportive therapies with oxygen supplementation, airway hydration, antibiotics, and pulse IV therapy with steroids, especially in the younger age group with a short duration of initial presentation and the presence of lung infiltrate (49).