Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable AP upright view of the chest . Previously seen left lower collapse has resolved . There is some residual left lower lobe atelectasis . Right lung is clear . No pleural effusion or pneumothorax . The cardiac , mediastinal and hilar contours are normal . No evidence of pneumonia .
    OUTPUT:
    
No longer complete left lower lobe collapse but still mild residual left lower lobe atelectasis .