Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation or pneumothorax . There is no pulmonary edema . A small left pleural effusion is likely present . Moderate cardiomegaly is unchanged . Mediastinal silhouette with aortic tortuosity is again noted .
    OUTPUT:
    
No pneumonia or edema . Small left pleural effusion .