B6 bronchus sign
Last revised by Liz Silverstone on 25 Sep 2024
Citation, DOI, disclosures and article data
Citation:
Silverstone L, Jones J, B6 bronchus sign. Reference article, Radiopaedia.org (Accessed on 11 Oct 2024) https://radiopaedia.org/articles/196499
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rID:
196499
Article created:
Disclosures:
At the time the article was created Liz Silverstone had no financial relationships to ineligible companies to disclose.
View Liz Silverstone's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Liz Silverstone had no financial relationships to ineligible companies to disclose.
View Liz Silverstone's current disclosures
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3 times, by
2 contributors -
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The B6 bronchus sign refers to visibility of the superior segment bronchi of the lower lobes (Boyden classification) on a frontal chest radiograph due to consolidation in the superior segment parenchyma 1. This is is a typical site for aspiration when supine 4 and may be seen in ICU patients following extubation 3.
References
- 1. Friedman P. Radiology of the Superior Segment of the Lower Lobe: A Regional Perspective Introducing the B6 Bronchus Sign. Radiology. 1982;144(1):15-25. doi:10.1148/radiology.144.1.7089247 - Pubmed
- 2. Chassagnon G, Morel B, Carpentier E, Ducou Le Pointe H, Sirinelli D. Tracheobronchial Branching Abnormalities: Lobe-Based Classification Scheme. Radiographics. 2016;36(2):358-73. doi:10.1148/rg.2016150115 - Pubmed
- 3. Prabhakaran A, Vanalal D, Soni K et al. Comparison Of positive Pressure Extubation with Traditional Extubation in Critically Ill Patients – A randomised Control Study. Ait. 2023;55(1):38-45. doi:10.5114/ait.2023.125584 - Pubmed
- 4. Košutová P & Mikolka P. Aspiration Syndromes and Associated Lung Injury: Incidence, Pathophysiology and Management. Physiol Res. 2021;70(Suppl4):S567-83. doi:10.33549/physiolres.934767 - Pubmed
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