Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided PICC terminates at the upper SVC . The heart size is top normal . The hilar and mediastinal contours are within normal limits . The lung volumes are low , resulting in bronchovascular crowding . There is no pneumothorax , focal consolidation , or pleural effusion . Bibasilar linear opacities are most compatible with atelectasis .
    OUTPUT:
    
No acute intrathoracic process .