Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . Mediastinal and hilar contours are within normal limits . Pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is present . Vague ovoid 7 mm opacity projecting over the left upper lobe and left second anterior rib was not apparent on the previous radiograph . No acute osseous abnormality is detected . Multilevel degenerative changes with anterior osteophytes are seen in the imaged thoracolumbar spine . Mild loss of height of a low thoracic vertebral body is unchanged .
    OUTPUT:
    
1 . No acute cardiopulmonary abnormality . 2 . Vague 7 mm nodular opacity projecting over the left upper lobe and left second anterior rib , potentially a pulmonary nodule , and not seen on the previous exam . This can be further assessed with bilateral oblique imaging to determine if this is a true pulmonary nodule or superimposition of overlying structures .