Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is extensive calcification of the costochondral junctions . Subtle basilar interstitial opacities are new . In the setting of hypoxia , findings are concerning for pulmonary edema or atypical infection . No focal confluent consolidation is identified . Blunting of the bilateral costophrenic angles may be secondary to chronic pleural thickening , though small effusions can not be excluded . There is no pneumothorax . Cardiomediastinal and hilar contours are within normal limits . Surgical clips are partially imaged in the region of the neck in this patient with history of head and neck cancer .
    OUTPUT:
    
New basilar interstitial opacities which may reflect atypical infection or mild pulmonary edema