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 size is normal . The mediastinum is not widened . Hilar contours are similar the prior exam . Mild biapical , right greater than left pleural thickening is unchanged . Slightly elevation of the right hemidiaphragm is similar to the prior exam . No acute osseous abnormality . A round radiopaque object projects over the mid upper abdomen , perhaps external to the patient .
    OUTPUT:
    
1 . No acute intrathoracic process . 2 . Round radiopaque object projects over the upper mid abdomen and could be external to the patient . Correlate with clinical exam and consider return for lateral view if indicated .