Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upper chest film ___ at 12 :36 is submitted .
    OUTPUT:
    
Three right chest tubes remain in place and there is a stable small right apical lateral pneumothorax . The left subclavian PICC line is unchanged in position . The heart remains stably enlarged which may reflect cardiomegaly , although pericardial effusion can not be entirely excluded . There is persistent mild perihilar edema which has improved since ___ at 01 :54 and is stable when compared to the prior study from 10 :59 am .