Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There appears to be an increase in the right - sided interstitial edema as well as a prominence of the azygos shadow which may be suggestive of increased venous filling pressure . There is also a small right pleural effusion . There is has been a slight interval increase in the size of the patient 's heart . The hilar and mediastinal contours are otherwise unremarkable . There is no pneumothorax . The visualized osseous structures are normal .
    OUTPUT:
    
Interval increase in pulmonary edema likely secondary to worsening diastolic heart failure .