Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is diffuse groundglass opacity . The heart is moderately enlarged , increased since ___ . The mediastinum appears widened . The aortic knob is calcified . There is no pleural effusion or pneumothorax . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
Cardiomegaly and pulmonary edema .