Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded and clear . No focal consolidation , effusion , edema , or pneumothorax . The heart is mildly enlarged . The mediastinum is not widened . No acute osseous abnormality . Mild bilateral degenerative changes at the acromioclavicular joints are noted . Multilevel degenerative changes in the lower thoracic spine are mild .
    OUTPUT:
    
1 . No focal pneumonia . 2 . Mild cardiomegaly likely . No effusion or edema .