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AAAC06 21/5/05 10:36 AM Page 16
6 The lungs

LEFT LUNG RIGHT LUNG
1
1 1
2 2
2
3 3 3
6
6
4 3
4
5
5 2 9 8
9 10
10
6 6
4
5 5
1 1 4
2 2
7 7
3
6 3 6

4
8 5 8
7 7
10 10
10 5 10
9 8 9
9 8 9
1 Apical Upper lobe
2 Posterior (1 and 2 from a common apico-posterior stem on the left side) Middle lobe
3 Anterior Lower lobe
4 and 5 Lateral and medial middle lobe (superior and inferior lingular on left side)
6 Superior (apical) Fig. 6.1
7 Medial basal (cardiac on left) The segmental bronchi (viewed from
8 Anterior basal (7 and 8 often by a common stem on left) the lateral side) and the broncho-
9 Lateral basal pulmonary segments, with their
10 Posterior basal standard numbering

Trachea

Arch of aorta

Lung hilum

Right atrium
Left ventricle
Diaphragm
Breast shadow
Costophrenic angle
Fig. 6.2
P–A. Chest X-ray

16 Thorax