Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged including marked enlargement of the main pulmonary artery contour . Fissures are thickened . There is no definite pleural effusion or pneumothorax . Parenchymal findings , which include a mild interstitial abnormality and an indistinct appearance to pulmonary vasculature , suggest pulmonary edema .
    OUTPUT:
    
Imaging findings suggesting mild to moderate pulmonary edema . However , in the appropriate clinical setting , atypical pneumonia could be considered if clinical findings are not suggestive of congestive heart failure .