An Anatomical Structure of the Posterior Basal Segmental Artery of the Right Lung

Description

Posteriorly oriented thoracic anatomy centers on the right lung’s posterior basal segmental artery (A10), traced from the right pulmonary artery as it courses inferiorly and posteriorly toward the lower lobe. Running alongside the segmental bronchus to the posterior basal segment (S10), the artery lies posterior to the right superior pulmonary vein tributaries and distributes into smaller arterioles within the peripheral parenchyma. The trachea and main bronchi sit superior and medial to the hilar vessels, while the heart occupies the central mediastinum anterior to the vertebral column, with coronary vessels visible on its surface. Red arterial and blue venous networks clarify the paired relationships between pulmonary arteries, pulmonary veins, and the bronchial tree. A posterior route view of A10 matters when you need to teach or plan lower-lobe segmental anatomy where bronchoarterial pairing guides safe dissection planes. Segmentectomy for a posterior basal lesion demands confident identification and control of the A10 branch, because an anatomic variant or a short common trunk with adjacent basal arteries can lead to ischemia of the remaining segments or troublesome hemorrhage if misclipped. Lymphadenectomy around the inferior hilum also benefits from this perspective. It is a tight space. Use this illustration in thoracic surgery and pulmonary anatomy teaching to reinforce right lower-lobe segmentation (S6 versus basal segments) and to map pulmonary arterial branches in relation to the segmental bronchi and pulmonary veins. It also suits journal figures and patient-facing surgical counseling materials discussing VATS or robotic right lower-lobe segmentectomy for early-stage NSCLC or localized bronchiectasis. Anatomical accuracy verified by SciePro's Medical Advisory Board.