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Tracheal (pig) bronchus

Lobar bronchi · detail · 0.1-2 per cent Right side

Anatomical variant present in 0.1 to 2 per cent of people in which a right upper lobe bronchus, usually for the apical segment, arises directly from the right wall of the trachea up to 2 cm above the carina.

Traced from the start

  1. Trachea
  2. Tracheal (pig) bronchus

Detail

Incidence
0.1 to 2 per cent of bronchoscopies; almost always right-sided
Supplies
The apical segment, or occasionally the whole right upper lobe

When it goes wrong

Endotracheal tube cuff sitting over the variant orifice

Recurrent right upper lobe collapse or pneumonia in a ventilated patient, or unexplained hypoxaemia after intubation

Practise this structure

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