Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is moderate cardiac enlargement which may reflect cardiomegaly or a pericardial effusion . There is pulmonary vascular congestion with no overt pulmonary edema . Thehilar and mediastinal contours difficult to assess given marked patient rotation on the current study . There is likely a hiatal hernia . There may be a focal opacity in the retrocardiac region ; however evaluation is limited due to patient rotation and motion artifact . Followup imaging may be prudent . No large effusions are seen . No pneumothorax is appreciated . No acute bony abnormality .
    OUTPUT:
    
1 . Limited examination due to marked patient rotation and overlying motion artifact on the lateral view . Cardiac enlargement which may reflect cardiomegaly or pericardial effusion . Probable hiatal hernia . No definite pneumonia or pulmonary edema . Followup imaging would be prudent . .