small airways disease

Small airways disease comprise of a group infectious as well as non-infectious conditions that affect the small airways (i.e. airways that are more peripheral to the main bronchi and proximal bronchioles (4 the 14 generation) - arbitrarily considered to be those with an internal diameter of ≤2 mm ).


While some authors consider this term synonymous with a bronchiolitis , conditions such as asthma may also fall under this group . There are also many other conditions that can affect or be associated with small airways which include:

Radiographic features


There are many CT features associated with small airways disease, which include:

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