Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph was provided . Basilar opacities and small left pleural effusion are unchanged . Mild cardiomegaly has slightly increased since the most recent prior exam . The tracheostomy tube is in appropriate position . Left PICC terminates in the right atrium . Bony structures are unremarkable .
    OUTPUT:
    
1 . Stable bibasilar opacities and left pleural effusion . 2 . Left PICC in right atrium . Recommend retracting 3 - 4 cm . 3 . Mild increase in heart size since the prior exam .