Lateral thoracic vein

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The lateral thoracic vein is a blood vessel that drains the lateral aspect of the thoracic wall and the mammary gland. It is an important component of the venous system in the thoracic region.

Anatomy

The lateral thoracic vein typically originates from the axillary vein and courses along the lateral side of the thorax. It runs parallel to the lateral thoracic artery, which supplies blood to the same region. The vein collects blood from the lateral chest wall, including the pectoralis major and pectoralis minor muscles, as well as the serratus anterior muscle.

Function

The primary function of the lateral thoracic vein is to return deoxygenated blood from the lateral thoracic wall and mammary gland to the heart. It plays a crucial role in the venous drainage of the thoracic region.

Clinical Significance

The lateral thoracic vein can be involved in various medical conditions. For instance, it may become engorged or varicose in cases of superior vena cava syndrome, where the normal flow of blood through the superior vena cava is obstructed. Additionally, the vein may be used as a landmark in certain surgical procedures involving the axilla or the breast.

Related Pages

• Axillary vein
• Lateral thoracic artery
• Pectoralis major
• Pectoralis minor
• Serratus anterior
• Superior vena cava syndrome