Q:

Collapse of bronchi caused by failure of bronchial cartilage development is indica- tive of which one of the following congenital malformations?

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Collapse of bronchi caused by failure of bronchial cartilage development is indica-tive of which one of the following congenital malformations?


  1. Congenital bronchial cysts
  2. Congenital neonatal emphysema
  3. Tracheoesophageal fistula
  4. Hyaline membrane disease
  5. Pulmonary hypoplasia

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B. Congenital neonatal emphysema is a malformation involving the bronchi. One or more lobes of the lungs are overdistended with air because air can be inspired through collapsed bronchi but cannot be expired.

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