Chest ImagingPeribronchovascular interstitial thickening
The peribronchovascular interstitium is a strong connective tissue sheath enclosing the bronchi and
hilar vessels, and extending from the level of the
pulmonary hila into the peripheral lung. Thickening of the peribronchovascular interstitium is recognizable as an apparent thickening of the
bronchial wall, and an apparent increase in size or
nodular appearance of the
pulmonary arteries. This term is generally used to describe
interstitial thickening in relation to relatively large airways and
pulmonary arteries. In a centrilobular location, peribronchovascular
interstitial thickening is usually referred to as
centrilobular interstitial thickening on HRCT, and is recognized by increased prominence of the centrilobular arteries or bronchioles.
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