1. Lobar Patterns of Consolidation

2. Lobar Patterns Remember: The whole lobe may not be involved
The patterns of atelectasis are very similar to consolidation, except:
Volume loss
Left upper lobe collapse
Check for your silhouette signs

3. Signs of Consolidation
Increased opacity
Fluffy, “air space” opacity
No/negligible volume loss signs
Air bronchograms (pathognomonic)
Not all consolidation is due to pus
Fluid, cells, blood, protein

4. Lobar patterns of consolidation
On the following slides you will see:
A diagram of the lobar pattern of consolidation
Yellow = opacity
Blue = site of silhouette sign
An example of lobar pneumonia

5. Shadows and Silhouettes
Left Lower Lobe Consolidation

6. Left Lower Lobe Pneumonia

7. Left Lower Lobe Pneumonia

8. The Spine Sign
Spine Sign
Normal

9. Shadows and Silhouettes
Left Upper Lobe Consolidation

10. Left Upper Lobe Consolidation

11. Right Middle Lobe Consolidation
Shadows and Silhouettes
Right Middle Lobe Consolidation

12. Right Middle Lobe Consolidation

13. Shadows and Silhouettes
Right Upper Lobe Consolidation

14. Right Upper Lobe Consolidation

15. Right Upper Lobe Consolidation

16. RUL Bronchoalveolar Carcinoma

17. Shadows and Silhouettes
Right Lower Lobe Pneumonia

18. Right Lower Lobe Pneumonia