Right lower lobe

Dr Craig Hacking et al.

The right lower lobe (RLL) is one of three lobes in the right lung. It is separated from the right upper lobe superiorly and the middle lobe anteriorly by the right oblique fissure and is subdivided into five bronchopulmonary segments.

    The right lower lobe lies in the posterior and lower aspect of the right hemithorax and contains five bronchopulmonary segments:

    Like all the pulmonary lobes, it is lined by visceral pleura which reflects at the pulmonary hilum where it is continuous with the parietal pleura. The right lower lobe bronchus arises as a direct continuation of the bronchus intermedius to traverse the right hilum into the right upper lobe.

    The right lower lobe is separated from the right upper lobe superiorly and the middle lobe anteriorly by the right oblique fissure.

    Like all the lobes of the lung, the right lower lobe has dual arterial supply:

    Venous drainage of newly oxygenated blood is via the right inferior pulmonary vein into the left atrium.

    Right bronchial veins drain into the azygos vein.

    The superficial subpleural lymphatic plexus drains the lung parenchyma and visceral pleura to the bronchopulmonary (hilar) lymph nodes in the hilum.

    The deep bronchopulmonary lymphatic plexus (in the bronchial submucosa and peribronchial interstitium) drains the root of the lung to hilar lymph nodes in the hilum.

    The hilar lymph nodes then drain to the tracheobronchial lymph nodes.

    Thoracic anatomy
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    Article information

    rID: 38908
    System: Chest
    Section: Anatomy
    Tags: stub, refs, cases
    Synonyms or Alternate Spellings:
    • RLL

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    Cases and figures

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    Figure 1: right sided bronchi
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    Figure 2: Bronchopulmonary Segments: annotated CT
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