Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are provided . The heart is mildly enlarged . Underpenetrated technique limits evaluation for mild pulmonary edema and therefore mild edema is difficult to exclude . No large effusion or pneumothorax is seen . The mediastinal contour is prominent , which could reflect vascular ectasia with slight leftward deviation of the trachea which is stable and may reflect thyroid enlargement . Bony structures are intact . No free air below the right hemidiaphragm .
    OUTPUT:
    
Mild cardiomegaly with possible mild pulmonary interstitial edema . Prominence of the mediastinum is stable and may reflect vascular ectasia or possible thyroid enlargement .