Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left upper lobe mass is again seen , with additional nodules better seen on the prior CT . There is no pleural effusion or pneumothorax . There is no new focal consolidation . Retrocardiac left lower lobe atelectasis is again noted . The mediastinal contours are unchanged .
    OUTPUT:
    
Upper lobe mass not significantly changed , with interval increase in left lower lobe atelectasis .