Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The cardiac silhouette is borderline enlarged . There is increased vascular crowding at the right base , likely due to the slightly decreased lung volumes . Minimal peribronchial cuffing is noted , similar to prior . No focal consolidation is identified . There is no pleural effusion or pneumothorax . Right humeral hardware is noted .
    OUTPUT:
    
No acute intrathoracic abnormality .