All of the following statement are true regarding histological features of emphysema, except:
**Core Concept**
Emphysema is a type of chronic obstructive pulmonary disease (COPD) characterized by the destruction of alveolar walls, leading to enlarged airspaces and loss of lung elasticity. This destruction results in impaired gas exchange and shortness of breath.
**Why the Correct Answer is Right**
The correct answer is a statement that does not accurately describe a histological feature of emphysema. Emphysema is characterized by the loss of alveolar septa, resulting in the formation of large, irregular airspaces. This destruction is primarily due to the breakdown of elastin and other connective tissue components of the alveolar walls. The histological hallmark of emphysema is the presence of enlarged airspaces, often with minimal inflammation or fibrosis.
**Why Each Wrong Option is Incorrect**
* **Option A:** This statement is true regarding histological features of emphysema. Enlarged airspaces are a characteristic feature of the disease, resulting from the destruction of alveolar walls.
* **Option B:** This statement is true regarding histological features of emphysema. The loss of alveolar septa and the resulting destruction of lung tissue lead to impaired gas exchange and shortness of breath.
* **Option C:** This statement is true regarding histological features of emphysema. The destruction of alveolar walls in emphysema results in the formation of large, irregular airspaces.
**Clinical Pearl / High-Yield Fact**
A key feature of emphysema is the loss of lung elasticity, which can lead to hyperinflation of the lungs and impaired gas exchange. This can result in symptoms such as shortness of breath, wheezing, and coughing.
**Correct Answer:** D