Question

the hallmark radiographic feature of emphysema on chest x - ray is: please select your answer... a air bronchograms b hyperinflated lungs with flattened diaphragms c reticulonodular pattern d ground - glass opacities

Explanation:

• Air bronchograms (A) are typically seen in conditions like pneumonia, not emphysema.
• Hyperinflated lungs with flattened diaphragms (B) are characteristic of emphysema. In emphysema, there is destruction of the alveolar walls, leading to air trapping. This air trapping causes the lungs to over - inflate (hyperinflation), and as a result, the diaphragms (which are muscle sheets at the base of the lungs) are pushed down and become flattened.
• Reticulonodular pattern (C) is often associated with interstitial lung diseases or some types of infections (e.g., miliary tuberculosis in a more chronic stage).
• Ground - glass opacities (D) are seen in conditions such as early - stage pneumonia, pulmonary edema, or some interstitial lung diseases.

Answer:

B. Hyperinflated lungs with flattened diaphragms