Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There again appears to be slight interval increase in the loculated left basal pneumothorax compared to the film from ___ performed at 10 : 18 a .m . The pigtail catheter appears to be in place . There is again minimal left - sided pleural effusion , stable compared to the prior exam . The fissural loculation in the left upper lung appears stable compared to radiographs dating back to ___ . The heart size is normal . The hilar and mediastinal contours are unremarkable .
    OUTPUT:
    
Interval increase in the loculated left basal pneumothorax . These findings were discussed with Dr . ___ at 4 : 57 pm by Dr . ___ ___ , by telephone , on the day of the exam .