Organ
Bronchopulmonary segments of the left lung
Left-lung territories with common segment combinations
High-yield
The lingula contributes S4 and S5 within the superior lobe. Combined labels S1+2 and S7+8 describe common patterns, not an extra lobe.
Overview
Left segment naming uses the same numerical framework as the right. The apical and posterior territories are often combined, as are the medial and anterior basal territories, so descriptions commonly count eight to ten segments.
Reference facts
- Location
- Superior and inferior lobes of the left lung, including the lingula in the superior lobe
- Parts
- Common pattern: S1+2 apicoposterior; S3 anterior; S4 superior lingular; S5 inferior lingular; S6 superior; S7+8 anteromedial basal; S9 lateral basal; S10 posterior basal
- Blood supply
- Left pulmonary arterial segmental branches and bronchial vessels for airway tissue
- Innervation
- Left pulmonary plexus
- Venous/Lymphatic drainage
- Left pulmonary venous tributaries and pulmonary-to-hilar lymphatic routes
- Function
- Provides named regional bronchovascular territories despite frequent combined segments
Clinical correlation
Variation in lower-lobe branches and venous drainage is relevant when selecting a segmental resection. Standard diagrams require confirmation against the patient’s anatomy.
Frequently asked questions
Where is the bronchopulmonary segments of the left lung located?
Superior and inferior lobes of the left lung, including the lingula in the superior lobe.
What does the bronchopulmonary segments of the left lung do?
Provides named regional bronchovascular territories despite frequent combined segments.
What are the parts of the bronchopulmonary segments of the left lung?
Common pattern: S1+2 apicoposterior; S3 anterior; S4 superior lingular; S5 inferior lingular; S6 superior; S7+8 anteromedial basal; S9 lateral basal; S10 posterior basal.
What is the blood supply of the bronchopulmonary segments of the left lung?
The bronchopulmonary segments of the left lung is supplied by the left pulmonary arterial segmental branches and bronchial vessels for airway tissue.