Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC tip appears to have been withdrawn slightly compared to the prior study , now terminating in the distal left brachiocephalic vein . Heart size remains mildly enlarged . The aorta is tortuous and demonstrates aortic knob calcifications . Mild pulmonary edema appears slightly improved . There are small bilateral pleural effusions , left greater than right , which allowing for differences in technique may be minimally decreased . No pneumothorax is present . There is diffuse demineralization of the osseous structures .
    OUTPUT:
    
Mild pulmonary edema , slightly improved , with small bilateral pleural effusions , left greater than right which is slightly decreased in the interval .