Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Evaluation is markedly limited due to large body habitus and low lung volumes . There is mild hilar engorgement and possible mild pulmonary edema . No convincing signs of pneumonia , effusion or pneumothorax . The heart is mildly enlarged . The mediastinal contour appears somewhat prominent likely due to position and AP technique . Otherwise no change
    OUTPUT:
    
Mild congestion / edema . No convincing evidence for pneumonia .