๐ Normal right lateral decubitus chest view
PRIMARY INDICATION
1๐ Evaluation of pleural effusion when erect PA not possible
2๐ Assessment of pleural fluid mobility
PLEURAL EFFUSION
3๐ Free right pleural effusion (layering along lateral chest wall)
4๐ Minimal pleural effusion (as little as 5–10 mL)
5๐ Loculated pleural effusion (non-layering)
6๐ Subpulmonic effusion
PNEUMOTHORAX
7๐ Small right pneumothorax (air rises medially)
8๐ Hydropneumothorax (air–fluid level)
PLEURAL VS PARENCHYMAL OPACITY
9๐ Differentiation of pleural effusion from lung consolidation
10๐ Assessment of suspected pleural mass
INFECTIOUS & INFLAMMATORY CONDITIONS
11๐ Parapneumonic effusion
12๐ Empyema (non-dependent collection)
13๐ Tuberculous pleural effusion
TRAUMA APPLICATIONS
14๐ Right hemothorax (layering fluid)
15๐ Occult pneumothorax in trauma
POST-PROCEDURAL ASSESSMENT
16๐ Post-thoracentesis residual fluid
17๐ Post-procedure pneumothorax
COMMON LIMITATIONS & PITFALLS
18๐ Poor patient cooperation causing fluid redistribution error
19๐ Difficulty assessing loculated effusions
20๐ Cardiac and mediastinal overlap
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