Which condition is characterized by chronic lung infections and poor growth?

Cystic fibrosis is characterized by chronic lung infections and poor growth due to the buildup of thick, sticky mucus in various organs, especially the lungs and pancreas. This condition is a genetic disorder that affects the respiratory, digestive, and reproductive systems. The thick mucus can obstruct airways, leading to recurrent lung infections as bacteria thrive in the stagnant mucus. Additionally, the mucus can impair the function of the pancreas, affecting nutrient absorption, which contributes to poor growth in affected individuals.

In contrast, asthma typically involves intermittent airway obstruction and bronchoconstriction, but it is not primarily associated with chronic infections or poor growth. Bacterial pneumonia involves acute lung infection and can affect growth temporarily, but it is not a chronic condition. Pulmonary embolism, a blockage in the pulmonary arteries, occurs suddenly and does not relate to chronic lung infections or growth issues. Thus, cystic fibrosis stands out as the only condition that consistently correlates with these symptoms.