Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right upper extremity PICC has been removed in the interim . There is obscuration of the left heart border , likely scarring from prior infection . There is no pleural effusion or pneumothorax . The heart size is normal . The mediastinal and hilar structures are unremarkable .
    OUTPUT:
    
Obscuration of the left heart is probably reflects scarring .