Tree in Bud Sign | definition of Tree in Bud Sign by Medical dictionary
Tree in Bud Sign
A finding on thin-slice CT images of the lung which corresponds to luminal impaction of bronchioles focally dilated with mucus, pus, or fluid, demarcating the normally invisible branching course of the peripheral airways. The dilated bronchioles have thickened walls and are accompanied by peribronchiolar inflammation.
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