Which condition involves the repeated accumulation of lung infections due to mucus blockage?

• A. Bronchiectasis
• B. Cystic fibrosis
• C. Emphysema
• D. Lung cancer

Answer: (B)

The condition that involves the repeated accumulation of lung infections due to mucus blockage is cystic fibrosis. Cystic fibrosis is a genetic disorder that affects the exocrine glands, leading to the production of thick and sticky mucus. This mucus accumulates in the lungs, obstructing the airways and causing significant respiratory problems. The blockage not only makes breathing difficult but also creates an environment conducive to repeated lung infections, as the stagnant mucus can harbor bacteria.

In contrast, bronchiectasis involves the chronic dilation of the bronchi and is often a result of underlying conditions that cause airway blockage or chronic inflammation, but it is more a consequence of ongoing lung issues rather than the primary cause. Emphysema is a progressive lung condition primarily resulting from the destruction of alveoli, leading to airflow limitation but not specifically linked to mucus blockage and lung infections. Lung cancer involves the abnormal growth of cells in the lung and can lead to several breathing difficulties or respiratory issues, but it does not primarily cause mucus blockage and subsequent infections.