Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Linear areas of atelectasis are present in the left mid lung and left lung base , as well as postsurgical changes related to prior right upper lobe resection . Otherwise , the lungs are relatively well inflated , with no focal consolidation , large pleural effusion , or pneumothorax . The cardiomediastinal silhouette is stable .
    OUTPUT:
    
Left mid and lower lung atelectasis . Otherwise , no acute cardiopulmonary process .