Right lower lobe consolidation

Last revised by Assoc Prof Craig Hacking on 04 Nov 2021

Right lower lobe consolidation refers to consolidation in part (incomplete) or all (complete) of the right lower lobe.

Consolidation refers to the alveolar airspaces being filled with fluid (exudate/transudate/blood), cells (inflammatory), tissue, or other material.

The list of causes of consolidation is broad and includes:

Consolidation is usually obvious on CT with the anatomical location easy to define through visualization of the pleural fissures, however features can be subtle on chest radiography. 

Features of right lower lobe consolidation on CXR include:

It must be remembered that the homogeneity of the consolidation will be influenced by any underlying lung disease.

Occasionally with complete lobar consolidation, there may be an increased volume of the affected lobe, rather than the more frequent collapse. When the fissures are outwardly convex, the appearance is referred to as the bulging fissure sign.

A mnemonic to remember the general features of consolidation is A2BC3.

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Cases and figures

  • Figure 1: position of RLL
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  • Figure 2: position of RLL
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  • Case 1
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  • Case 2
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  • Case 3
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  • Case 4
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  • Case 5: Right lower lobe pneumonia
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  • Case 6: superior segment right lower lobe pneumonia
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