Extensive Tree in Bud Changes
Active TB with Transbronchial Spread

CT Active TB Transbronchial Spread with Extensive Tree in Bud Changes
39-year-old immigrant Vietnamese male presents night sweats fever and cough. CT in the axial plane through the mid chest shows innumerable micronodules resulting from transbronchial spread with resultant tree in bud pattern scattered through the right lung (magnified in the right lower image). There are minimal similar changes in the lingula (magnified left lower image)..
Ashley Davidoff MD TheCommonvein.net 135789c 006Lu
  • “Tree in bud” changes refer to a
      • radiological finding
      • indicates the presence of
        • small airway disease or obstruction
      • Causes
        • bronchiolitis,
        • bronchiectasis,
        • endobronchial spread of infection eg TB
        • ABPA
        • aspiration
        • mucus plugging
  • Tree in Bud 
  • Faces of Tree in Bud
  • Cases of Tree in Bud