Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral chest radiograph demonstrates a moderately enlarged heart and low lung volumes , though size is inadequately evaluated given AP technique . Retrosternal density is noted , possibly reflective of mediastinal fat though anterior mediastinal soft tissue lesion can not be excluded . Additional lordotic positioning likely exaggerates heart size . There is no overt pulmonary edema . There is no pleural effusion or pneumothorax . A right internal jugular central line is identified , its tip which terminate within the right atrium . No acute osseous abnormality is detected .
    OUTPUT:
    
1 . Borderline cardiomegaly exaggerated by positioning . 2 . Anterior mediastinal density may reflect prominent mediastinal fat though soft tissue lesion can not be excluded . Two lateral films , one with arms raised overhead and an additional view with arms pulled back is advised to better visualized anterior mediastinal compartment .