Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior radiograph from ___ , there has been interval placement of a left chest drain . A small left apical lateral pneumothorax is identified . There is bibasilar atelectasis and interstitial edema . There are no pleural effusions . The heart is normal in size . Free intraperitoneal air is seen below both hemidiaphragms , likely related to recent surgery .
    OUTPUT:
    
Small left apicolateral pneumothorax . These findings were discussed with Dr . ___ by Dr . ___ ___ telephone on ___ at 9 :30 AM , at time of discovery .