Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen left - sided pulmonary opacities have essentially resolved with mild residual atelectasis / scarring at the left lung base . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable . Lower lateral left - sided rib deformity re - demonstrated .
    OUTPUT:
    
Essential resolution of previously seen left - sided pulmonary opacities with mild residual left base atelectasis / scarring seen .