Colored Medial Segment of the Right Lung, Medial View

Description

Medially oriented anatomy of the right lung highlights the medial bronchopulmonary segment of the middle lobe (segmentum mediale, S5) in color against the adjacent noncolored parenchyma. On this surface, the middle lobe sits anterior to the hilum and inferior to the horizontal fissure, with the oblique fissure descending posteroinferiorly toward the diaphragmatic base. The segment faces the mediastinum, where pleural impressions for the right atrium and the superior and inferior venae cavae typically contour the lung’s medial surface in close proximity to the lobar bronchus and pulmonary vessels at the root. Segmental anatomy matters when you need to match a lesion to a bronchus. The medial segment of the right middle lobe is a common site of recurrent atelectasis and infection in right middle lobe syndrome, where poor collateral ventilation and bronchial narrowing can lead to persistent collapse and bronchiectasis. For surgeons and interventional pulmonologists, clear separation of S5 from the lateral segment (S4) supports planning for segmentectomy, bronchoscopy targeting of the middle lobe bronchus, and correlation with CT fissural anatomy when the horizontal fissure is incomplete. Use this artwork for thoracic anatomy teaching in gross anatomy and respiratory blocks, for radiology captions correlating right middle lobe segmental disease with bronchopulmonary territories, or for operative atlases discussing middle lobe resection and segment-preserving approaches. It also fits patient education materials explaining why a process adjacent to the right heart border on chest radiography often localizes to the right middle lobe. Anatomical accuracy verified by SciePro's Medical Advisory Board.