Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Low lung volumes results in bronchovascular crowding . The lungs are clear without focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
No acute intrathoracic abnormality . Specifically , no pneumothorax .