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Traction bronchiectasis (plural: bronchiectases) refers to an etiological subtype of bronchiectasis where there is irreversible dilatation of bronchi and bronchioles within areas of pulmonary fibrosis or distorted lung parenchymal architecture.
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The term "traction bronchiolectasis" is also used to refer to the same phenomenon when it involves the bronchioles rather than the bronchi. Often traction bronchiectasis and bronchiolectasis coexist.
It can arise from a number of underlying causes which result in lung fibrosis. The bronchus is pulled apart by the traction of surrounding parenchymal fibrosis.
There may be a predilection for the upper lobes where there is less supporting cartilage 1.
- 1. Collins J, Stern EJ. Chest Radiology. Lippincott Williams & Wilkins. (2008) ISBN:0781763142. Read it at Google Books - Find it at Amazon
- 2. Cantin L, Bankier AA, Eisenberg RL. Bronchiectasis. AJR Am J Roentgenol. 2009;193 (3): W158-71. AJR Am J Roentgenol (full text) - doi:10.2214/AJR.09.3053 - Pubmed citation
- 3. Westcott JL, Cole SR. Traction bronchiectasis in end-stage pulmonary fibrosis. Radiology. 1986;161 (3): 665-9. Radiology (abstract) - Pubmed citation