Centrilobular emphysema:
Chapter: 12
(Also referred to as centriacinar emphysema) can be defined as enlargement and destruction of the respiratory bronchiole (i.e., The central portion of the acinus) with sparing of the distal portion of the acinus. When severe, however, it may involve the distal acinus and be difficult to distinguish from panlobular emphysema. This is the most common form of emphysema and typically involves the upper lung zones. It occurs more frequently in males than in females.