This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
Long term complications of bronchopulmonary dysplasia are all except : 
Select and explain. 
A. Decreased FRC, B. Small airway disease, C. Large airway disease, D. Interstitial lung disease
C: Large airway disease
Answer: C: Large airway disease 
Explanation: Large airway disease Bronchopulmonary dysplasia is clinically diagnosed in neonate <32 weeks of gestation who requires at least 28 days of oxygen therapy. It is now infrequent in infants> 1200 gm of bih weight & gestation >30 wks. Histology : * Airway epithelial hyperplasia * Squamous metaplasia * Alveolar wall thickening (Small airway disease) * Peribronchial or interstitial fibrosis * Major abnormality in new BPD is decrease in alveolar number alveolar hypoplasia which will definitely reduce FRC. * Thus we are left with (c) large airway disease as answer of exclusion.