Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . There is mild unfolding along the aorta . The aortic arch is calcified . There is patchy left basilar opacity partly obscuring the left hemidiaphragm , seen only on the frontal view and most likely due to minor atelectasis . Otherwise , the lungs appear clear . Bony structures are unremarkable .
    OUTPUT:
    
Streaky left basilar opacity , probably minor atelectasis . Mild cardiomegaly .