Peribronchial cuffing refers to a radiographic term used to describe haziness or increased density around the walls of a bronchus or large bronchiole seen end-on, both on plain radiographs and on CT. It is sometimes described as a "doughnut sign". When viewed tangentially, it can give the appearance of tram tracks 3.
It may either represent bronchial wall thickening or fluid around bronchi due to lymphatic congestion 3.
It can be seen in a number of pathologies, which include:
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