Intercostal glands are on each side of the spine, along the heads of the ribs, which empty into both ducts.

Several glands lie between the sternum and pericardium; several round the great vessels receive the lymphatics of the heart ; numerous bronchial glands receive the superficial and deep lymphatics of the lungs. There are ten or twelve posterior mediastinal glands along the oesophagus and aorta.

There are an interior and posterior set of deep lymphatics in the intercostal spaces which go to the internal mammary and intercostal glands respectively.