Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ 14 :35 , size of right apical pneumothorax is unchanged . Left basilar atelectasis has improved . Right basilar atelectasis is unchanged . . Top normal heart size . No pulmonary edema . No consolidation . No pleural effusion . Mediastinal borders and hilar structures are normal .
    OUTPUT:
    
Since ___ , unchanged size of right pneumothorax . Mild improvement in left basilar atelectasis .