Colored Visualization Specific to the Posterior Basal Segments of the Lungs

Description

Color-coded segmental anatomy of the inferior lobes is presented from an anterior perspective, with emphasis on the posterior basal bronchopulmonary segments (Segmenta basalia posteriora, S10) at the lung bases. The highlighted S10 territories occupy the most inferior and posterior portions of each lower lobe, lying posterior to the anterior basal segment (S8) and lateral to the medial basal segment (S7) on the right where it is typically distinct. Segmental borders are implied by the fissural and parenchymal planes used in surgical and radiologic segmentation, with right and left sides differentiated chromatically for rapid orientation. Anterior views that isolate posterior basal segments matter because S10 is a frequent site of dependent pathology and a common blind spot when learners think only in lobar terms. Supine aspiration and postoperative atelectasis often settle in posterior basal lower lobe regions, and bronchiectasis or consolidation in this distribution prompts targeted assessment of the segmental bronchi and accompanying pulmonary arteries on CT. For thoracic surgery, segment-level localization underpins planning for VATS segmentectomy, where accurate identification of the S10 bronchus, artery, and intersegmental planes helps preserve functional parenchyma while achieving oncologic margins. Use this artwork in respiratory anatomy teaching for bronchopulmonary segment mapping, in radiology curricula when correlating axial CT findings to segmental territories, or in thoracic surgery resources discussing lower-lobe segmentectomy and segment-directed bronchoscopy. It also suits patient-facing education in pulmonology clinics when explaining why symptoms or imaging findings localize to the back and base of the lungs despite an anterior examination view. Anatomical accuracy verified by SciePro's Medical Advisory Board.