How understanding the “tree in bud” pattern made me a better radiologist

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On radiographs, the CT “tree-in-bud” pattern often appeares as soft-tissue opacity nodules; which can be initially confusing and misinterpretated for focal parenchymatous lesions as granulomas or metastases . However, there are some characteristics that can help distinguishing the bronchial intraluminal lesions from the alveolar/parenchymatous location, in both radiographs and CT. Participants are expected to kinow the normal anatomy of the thorax in cat, as seen on CT study and know the use of MIP and MinIP on multiplanar reconstructed images.


CT, lungs, feline, Minimal and maximal intensity projections, high-resolution, bronchial plugs


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