Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to prior , cardiomegaly has improved , now mild . Increased interstitial markings have also improved . There is bibasilar , left greater than right atelectasis . There is a small hiatal hernia . There is no pneumothorax . Pleural effusion is small , if any . Sclerosis of the T4 vertebral body and moderate compression fracture of T7 , essentially unchanged compared to prior chest CT . Multiple healed right rib fractures are again noted . Median sternotomy wires are intact .
    OUTPUT:
    
Compared to chest radiograph from ___ , there has been interval improvement in now mild interstitial edema .