Which bronchopulmonary segment of the right lung is located in the superior lobe and lies posterior to the apical segment?

Explanation

## Bronchopulmonary Segments of Right Superior Lobe **Key Point:** The right superior lobe contains three segments arranged in an anteroposterior plane: apical (most superior), posterior, and anterior (most inferior). **High-Yield:** The posterior segment of the right superior lobe is located directly posterior to the apical segment and is supplied by the posterior segmental bronchus (a branch of the right superior lobar bronchus). ### Anatomical Arrangement | Segment | Lobe | Position | Bronchial Supply | | --- | --- | --- | --- | | Apical | Right Superior | Most superior/anterior | Right superior lobar bronchus | | Posterior | Right Superior | Posterior to apical | Right superior lobar bronchus | | Anterior | Right Superior | Anteroinferior | Right superior lobar bronchus | **Clinical Pearl:** The posterior segment is clinically important as it is a common site for aspiration pneumonia in supine patients due to its posterior position when lying flat. **Mnemonic:** **APL** = Apical, Posterior, Lateral (right superior lobe segments in order from medial to lateral), though the correct order is **Apical, Posterior, Anterior** for superior lobe specifically.