Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest film ___ at 10 :59 is submitted .
    OUTPUT:
    
Three right chest tubes remain in place and there is a small right apical and lateral pneumothorax which may be slightly larger when compared to the most recent prior study , although this could be related to differences in positioning . Followup imaging should be considered . Left subclavian PICC line is unchanged . Heart remains stably enlarged . There is residual but improving mild interstitial and perihilar edema . Layering effusion on the left with associated retrocardiac opacity is stable consistent with partial lower lobe atelectasis , although pneumonia can not be entirely excluded .