The Right Lung

The right lung is the larger of the two lungs and is divided in three lobes: the upper, middle and lower lobes. The major fissure separates the upper and middle lobes from the lower lobe and the minor fissure separates the upper lobe from the middle one; the latest is usually less evident. The right lung is fixed centrally by the hilum that is composed by the right main bronchus, the pulmonary artery and the superior and inferior pulmonary veins, and distally by the inferior pulmonary ligament. From the hilum the right main bronchus, the pulmonary artery and the superior and inferior pulmonary veins divide into lobar, segmental and subsegmental branches. The lymphatic drainage pathway from subpleural lymphatic vessels runs with the arteries and bronchi and subsequently into the segmental, lobar, interlobar, hilar and mediastinal nodes.