Medial Surfaces Observed on the Pulmonary Lobes

Description

Medial (mediastinal) surfaces of the right and left lungs are presented in lateral orientation, bringing the facies mediastinalis into full profile and centering the concavity created by the hilum. The root of each lung is implied by the clustered profiles of the main bronchus, pulmonary artery, and pulmonary veins as they enter and exit the lung, with these structures sitting medial to the lobar parenchyma and deep to the pleural surface. On the left, the hilar impression typically aligns with the adjacent cardiac silhouette and great vessels, while on the right the mediastinal surface commonly bears a different pattern of grooves related to the superior vena cava and azygos vein. Spatially, the hilum lies medial and slightly posterior on each lung, with the lobes projecting laterally and inferiorly away from the mediastinum. Focusing on the medial surfaces matters because this is where clinicians map the bronchovascular anatomy that guides bronchoscopy, pulmonary resection, and interpretation of cross sectional imaging. Hilar enlargement on chest radiographs often reflects lymphadenopathy, pulmonary arterial hypertension, or a central bronchogenic carcinoma, and a clear sense of the normal hilar contour helps distinguish vascular prominence from a true mass. This angle also supports teaching the left right asymmetry that underlies surgical planning, including the relationship of the left lung root to the aortic arch and the right lung root to the superior vena cava region. Small differences, big consequences. Use this artwork in gross anatomy labs, respiratory blocks, and radiology primers to anchor mediastinal relations before moving to CT or operative views, and in surgical education materials describing hilar dissection during lobectomy or pneumonectomy. Suitable for textbooks, atlases, exam items, and patient facing diagrams when explaining central lung tumors or lymph node staging. Anatomical accuracy verified by SciePro's Medical Advisory Board.