Which statement differentiates panacinar from centriacinar?

Which statement differentiates panacinar from centriacinar?

• A. Panacinar Involves All Parts of Acinus
• B. Centriacinar Involves All Parts of Acinus
• C. Panacinar Is Unrelated to Alpha-1 Antitrypsin Deficiency
• D. Centriacinar Is Caused by Deficiency

Answer: (A)

Emphysema patterns show where destruction occurs inside the acinus. Panacinar destruction extends uniformly through the entire acinus—from the respiratory bronchioles all the way to the alveolar sacs—making the damage diffuse. Centriacinar, on the other hand, mainly hits the central part around the respiratory bronchioles, with the distal acinus relatively spared. This diffuse involvement in panacinar aligns with its classic association with alpha-1 antitrypsin deficiency, whereas centriacinar is more linked to smoking and tends to be centered in the upper lobes. So the statement that panacinar involves all parts of the acinus best captures the fundamental difference.

Emphysema patterns show where destruction occurs inside the acinus. Panacinar destruction extends uniformly through the entire acinus—from the respiratory bronchioles all the way to the alveolar sacs—making the damage diffuse. Centriacinar, on the other hand, mainly hits the central part around the respiratory bronchioles, with the distal acinus relatively spared. This diffuse involvement in panacinar aligns with its classic association with alpha-1 antitrypsin deficiency, whereas centriacinar is more linked to smoking and tends to be centered in the upper lobes. So the statement that panacinar involves all parts of the acinus best captures the fundamental difference.