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Arch Otolaryngol Head Neck Surg. 2006;132:454.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

Diagnosis: Tracheal bronchus (TB)

Tracheal bronchus, also referred to as pig's bronchus (because it is a normal finding in swine and ruminant animals), refers to a variety of bronchial anomalies that arise from the trachea or the main stem bronchus.¹ The term includes a set of abnormalities of the bronchi that originate from the trachea or the main stem bronchus and are directed to the upper lobe of the lung.² Ghaye et al² reported a series of 35 TBs, 3 of which originated at the level of the carina, typical of trifurcation at the carina, as demonstrated by direct laryngoscopy and bronchoscopy in the present case. This anomaly arises almost exclusively on the right, usually within 2 cm of the carina,³ with reported prevalence ranging from 0.1% to 2% for right TBs and 0.3% to 1% for left TBs.²

Tracheal bronchus is more commonly seen in males and children with congenital anomalies. Conditions . . . [Full Text of this Article]

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Arch Otolaryngol Head Neck Surg. 2006;132(4):453.
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