Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral interstitial opacities may be due to atypical infection or edema in the appropriate clinical context . Moderate cardiomegaly despite the projection is unchanged . There is no pneumothorax . Aortic arch calcifications are incidentally noted . The partially imaged upper abdomen unremarkable .
    OUTPUT:
    
Increased bilateral interstitial opacities may be due to atypical infection or pulmonary edema . Stable moderate cardiomegaly .