Patchy opacity in the right lower lobe, which is nonspecific but may represent aspiration, infection, or atelectasis. Mild blunting of the costophrenic angles posteriorly is compatible with small pleural effusions. No pneumothorax is present.
Simple pleural effusion (Present) Atelectasis (Uncertain) Aspiration (Uncertain) Simple pneumothorax (Absent) Pneumonia (Uncertain)