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Bronchus intermedius

Lobar bronchi · detail · Right only 2-3 cm

The 2 to 3 cm continuation of the right main bronchus between the origin of the upper lobe bronchus and its division into middle and lower lobe bronchi. There is no left-sided equivalent because the left upper and lower lobe bronchi arise together.

Traced from the start

  1. Trachea
  2. Right main bronchus
  3. Bronchus intermedius

Detail

Extent
From the upper lobe bronchus origin to the bifurcation into middle (anterior) and lower (posterior) lobe bronchi
Relations
Right pulmonary artery in front and lateral; azygos vein and oesophagus behind

When it goes wrong

Tumour or foreign body lodged in the bronchus intermedius

Combined collapse of the right middle and lower lobes with a preserved, hyperinflated upper lobe

Practise this structure

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