Superior Segmental Artery of the Left Lung, Posterior View

Description

Posteriorly oriented thoracic anatomy centers on the left pulmonary arterial tree, highlighting the superior segmental artery (A6) as it courses laterally from the left pulmonary artery and ascends to the superior segment of the lower lobe. Nearby, the left main bronchus and its lobar and segmental branches track alongside the vessels, with smaller arterioles following the bronchial branching pattern toward the peripheral parenchyma. Superior and medial in the field, the heart anchors the scene, while the pulmonary veins return toward the left atrium in a more anterior and inferior plane relative to the segmental arteries. Color coding separates oxygenated and deoxygenated flow. Clean and legible. A posterior view is the one you want when teaching or planning around the intersegmental anatomy of the lower lobe, because A6 frequently sits high and can be mistaken for upper-lobe supply if you do not respect its origin and cranial course. This is a common pitfall during VATS segmentectomy or left lower lobectomy, where misidentification of segmental pulmonary arteries can lead to unintended ischemia, bleeding, or an incomplete oncologic resection margin. The illustration also supports correlation with CT angiography and bronchoscopy by reinforcing the bronchovascular pairing and the relative positions of arteries versus veins at the hilum. Use this asset for thoracic surgery teaching files, pulmonary anatomy modules in gross anatomy and radiologic anatomy courses, and figure plates in manuscripts discussing segmentectomy, hilar dissection, or pulmonary arterial variants on the left. It also fits patient-facing materials that explain targeted resections for early-stage lung cancer or localized bronchiectasis when simplified labels are added. Anatomical accuracy verified by SciePro's Medical Advisory Board.