Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: SUSPECT BACKGROUND HYPERINFLATION , AS CAN BE SEEN WITH COPD . THE HEART IS NOT ENLARGED . THE CARDIOMEDIASTINAL SILHOUETTE IS WITHIN NORMAL LIMITS . NO CHF , FOCAL INFILTRATE , OR EFFUSION IS IDENTIFIED . NO PNEUMOTHORAX IS DETECTED . A THIN CURVILINEAR DENSITY EXTENDING VERTICALLY AT THE LEFT LUNG BASE COULD REPRESENT SCARRING OR LESS LIKELY , THE EDGE OF A BULLA -- THIS IS UNCHANGED COMPARED ___ . THERE IS MILD ANTERIOR WEDGING OF ___ MIDTHORACIC VERTEBRAL BODIES THAT IS UNCHANGED COMPARED WITH ___ . .
    OUTPUT:
    
NO ACUTE PULMONARY PROCESS IDENTIFIED . NO PNEUMOTHORAX DETECTED .