left main bronchus


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left main bron·chus

[TA] Avoid the incorrect term left main stem (or mainstem) bronchus.
primary division of the tracheobronchial tree arising as the left branch of the bifurcation of the trachea, then passing in front of the esophagus and enters the hilum of the left lung where it divides into a superior lobe bronchus and an inferior lobe bronchus. It is longer, of narrower caliber, and more nearly horizontal than the right main bronchus, hence, aspirated objects enter it less frequently.
References in periodicals archive ?
All of them were women in the age group of 15 to 35 years and all had positive chest radiography findings while commonest anatomical location was left main bronchus," the study conducted by Manzoor Ahmad Latoo, Zafarullah Beig and Aleena Shafi said.
A second child presented with a chronically obstructed left main bronchus with destruction of the entire left lung.
This graft was then used to replace the recipient's left main bronchus.
7) In type IIA, the bridging bronchus originates from the left main bronchus and supplies the right middle and upper lobe.
Further investigations including bronchoscopy showed a tumour in left main bronchus which was treated with laser ablation and placement of a tracheo-bronchial stent.
Fiberoptic bronchoscopy revealed a blood clot extending from the left upper lobe to the left main bronchus and trachea with no evidence of an active focus of bleeding.
The maximum stenosis in the trachea, right main bronchus, bronchus intermedius and left main bronchus was measured, if present.
A 9 Fr Coopdech EB was introduced through the ETT lumen to emerge at the ETT tip (not through the Murphy eye) to block the left main bronchus under fibreoscopy.
The fistula occurs most frequently between the thoracic aorta and the left main bronchus.
In a study of more than 400 patients, the most common sites of foreign body impaction within the esophagus were at the level of the postcricoid region (57%), the aortic arch and left main bronchus (26%), and the distal gastroesophageal junction (17%).
A worm was seen in the left main bronchus and, upon closer examination, a male and female worm in copula were seen.
The left main bronchus was compressed between the aneurysm and the aortic trunk (Fig 3).