Table 1 Sonographic anatomic classification based on quantity of pleural effusions (in longitudinal scan from the posterior axillary line)
From: The role of chest ultrasonography in the management of respiratory diseases: document I
Grading | Description | Landmarks | Intercostal spaces |
|---|---|---|---|
Grade 1 Minimum | Limited to costophrenic sinus | Diaphragmatic dome partially evident | Limited to costophrenic sinus |
Grade 2 Small | Lower lung lobe partially involved | Diaphragmatic dome completely evident | 1 intercostal spaces |
Grade 3 Small to Medium | lower lung lobe partially collapsed | Lower lung lobe partially atelectasic. Pulmonary hilum not visible | 2-3 intercostal spaces |
Grade 4 Medium | Lower lung lobe completely collapsed | Atelectasis of the lower lung lobe. Pulmonary hilum visible | 3-4 intercostal spaces |
Grade 5 Large | Upper lung lobe partially involved | Atelectasis of the lower lung lobe. Upper lung lobe partially atelectasic. | 4 intercostal spaces or more |
Grade 6 Massive | Lung fully collapsed | Atelectasis of the whole lung. Hilum completely visible |