Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lungs are clear . There is no focal consolidation , effusion , or pneumothorax . There is a subtle linear density abutting the left heart border most likely representing atelectasis or scarring , unchanged from a prior CT from ___ . The cardiomediastinal silhouette is normal . A coronary stent projects over the heart . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .