Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is normal in size . There is a small convexity at the expected site of the left atrial appendage , possibly reflecting enlargement of the left atrial appendage . The mediastinal and hilar contours appear unremarkable , noting only calcification along the aortic arch . The lungs are hyperinflated . There is no definite pleural effusion or pneumothorax . Slight scarring is noted at each lung apex . In addition , projecting over the left lung apex and clavicle is a nodular density of about 7 mm in size , possibly a lung nodule . Linear opacities projecting over the left upper lobe suggest minor scarring . The bones are probably demineralized . There is a mild biconcave compression deformity involving an upper thoracic vertebral body . A mid thoracic vertebral body shows mild but probably chronic loss in height . Two lower thoracic vertebral bodies also show minimal compression deformities . Mild degenerative changes are noted along the mid thoracic spine .
    OUTPUT:
    
1 . No evidence of acute disease . 2 . No evidence for free air . 3 . Nodular focus projecting over the left lung apex , a possible lung nodule . When clinically appropriate , evaluation with chest CT is recommended . 4 . Hyperinflation and suspected emphysema . 5 . Suspected bony demineralization and mild compression deformities , likely chronic . 6 . Possible left atrial enlargement . A preliminary reading was provided electronically while the patient was still in the ER .