Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP radiograph of the chest demonstrates the right lung is well expanded and clear . The left lung is partially imaged . There is no evidence of focal opacity within the visualized portions of the left lung . The cardiomediastinal silhouette is unremarkable . There is no evidence of pleural effusion on the right . No right pneumothorax is present . No apical pneumothorax is present on the left .
    OUTPUT:
    
The left lung is not completely imaged , however within the visualized portions of the chest , there is no evidence of acute cardiopulmonary disease .