Colored Lateral Basal Segment of the Right Lung, Medial View

Description

Shown from the mediastinal (medial) aspect of the right lung, the lateral basal bronchopulmonary segment (segmentum basale laterale, S9) of the inferior lobe is isolated in color against adjacent parenchyma. Its diaphragmatic surface forms the inferior border, curving onto the base where it abuts the dome of the diaphragm, while the segment’s medial boundary lies toward the hilum and pulmonary ligament. The segment sits lateral to the basal medial segment (S7) and typically posterior to the anterior basal segment (S8), with intersegmental planes implied by the course of segmental veins. Segmental anatomy matters when you need to think beyond lobes. The medial view clarifies how S9 relates to the inferior pulmonary vein and the basal bronchi as they enter the lower lobe, which is the perspective surgeons and bronchoscopists mentally reconstruct when planning a right lower lobe segmentectomy or navigating to a peripheral lesion. This is also a common dependency zone for aspiration and postoperative atelectasis in supine patients, so the basal segment map is more than academic. Use this artwork in thoracic surgery teaching files to discuss anatomic segmentectomy of the right lower lobe, in radiology curricula to correlate bronchopulmonary segments with CT (including oblique fissure relationships and venous intersegmental planes), or in respiratory therapy education when explaining dependent consolidation along the basal segments near the diaphragm. Anatomical accuracy verified by SciePro's Medical Advisory Board.