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In emphysema, the dilatation occurs:

# In emphysema, the dilatation occurs:
a) Beyond major bronchus
b) In alveolar region
c) Beyond terminal bronchioles
d) Beyond minor bronchus


The correct answer is C. Beyond terminal bronchioles.

Emphysema is referred to the pathological process of a permanent destructive enlargement of the airspaces distal to the terminal bronchioles. The two types of emphysema that cause clinically significant air flow obstruction are Centriacinar (common) and Panacinar emphysema. Panacinar emphysema is associated with α1 antitrypsin deficiency.

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