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 . There is mild bibasilar atelectasis . No focal consolidation , pleural effusion , or pneumothorax . Heart size is normal . The mediastinal and hilar contours are normal . Serpiginous sclerosis in the humeral heads bilaterally may represent bone infarcts , similar to CT ___ .
    OUTPUT:
    
No pneumonia , edema , or effusion . Bibasilar atelectasis .