PMID: 26770485Jan 16, 2016Paper

Tree-in-bud pattern of chest CT images for diagnosis of Mycobacterium abscesses

International Journal of Clinical and Experimental Medicine
Haiqing ChuXiwen Sun

Abstract

Changes of chest CT images in Mycobacterium and non-Mycobacterium abscesses in patients with lung disease were with a view to making an early diagnosis. 124 primary patients diagnosed with non-tuberculosis Mycobacterium infections with a positive sputum acid-fast smear were enrolled in this retrospective study. CT images and clinical data of these patients were analyzed. The 52 Mycobacterium abscess lung disease cases included bronchiectasis 82.7% (43/52), which was more easily detected bilaterally than unilaterally (29/52 vs. 14/52), lung consolidation 44.2% (23/52), nodules 44.2% (22/52), cavities 32.7% (17/52), tree-in-bud pattern 42.3% (22/52) and patchy shadow 63.5% (33/52) in CT images. Tree-in-bud pattern was more common in Mycobacterium abscess compared with non-Mycobacterium abscess lung disease (42.3% vs. 18.1%, P = 0.004). A significant difference of the lung area involved by tree-in-bud in CT was found between non-Mycobacteria abscess and Mycobacterium abscess lung disease (17.0% vs. 7.2%, P < 0.001), and tree-in-bud occurred more readily unilaterally (21.2% vs. 6.9%, P = 0.029), and in the inferior lobe of the right lung (3.2% vs. 0.2%, P = 0.029) in Mycobacterium abscess lung disease. Patchy shadow was more common...Continue Reading

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