Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse bilateral interstitial abnormality without focal opacity . No pleural effusion or pneumothorax identified . There is moderate cardiomegaly . The mediastinal contours are normal . Hardware is seen in the left shoulder .
    OUTPUT:
    
Diffuse bilateral interstitial abnormality consistent with mild pulmonary edema or atypical pneumonia . Moderate cardiomegaly .