Lateral Thoracic Vein, Anterior View

Description

Running vertically along the lateral chest wall, the lateral thoracic vein ascends in the superficial fascia over the serratus anterior, just inferior to the axilla and lateral to the pectoralis major. Tributaries from the lateral thoracic (mammary) region converge toward this channel, while the cephalic vein and axillary vein lie superiorly and medially as the venous drainage collects toward the axillary fossa. Overlying landmarks in an anterior male torso typically include the clavicle, deltoid, and biceps brachii laterally, with the pectoralis major forming the anterior axillary fold. Venous pathways read clearly. Clinically, this vessel matters because it parallels the lateral thoracic artery and sits in the operative corridor for axillary lymph node procedures and mastectomy-related dissection, where superficial venous bleeding can obscure the field if the vessel is torn. Its connections with thoracoepigastric and superficial epigastric veins contribute to a collateral route between the axillary and femoral systems, a pattern clinicians look for in superior vena cava obstruction when dilated chest wall veins become conspicuous. The anterior perspective also helps clarify how serratus anterior forms the muscular bed deep to the vein, a useful relationship when discussing long thoracic nerve vulnerability during axillary surgery. Faculty can drop this plate directly into gross anatomy and medical imaging teaching to contrast superficial veins with deeper axillary tributaries, and it works well in surgical atlases covering breast, axilla, and vascular access anatomy. Publishers often pair it with diagrams of axillary vein cannulation or with oncology content explaining lymphatic drainage and post-operative hematoma risk in the axillary tail of the breast. Anatomical accuracy verified by SciePro's Medical Advisory Board.