Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Normal heart size , mediastinal and hilar contours . No pleural effusion or pneumothorax . There are new interstitial opacities in the bilateral mid and lower lungs , right greater than left . Two lead pacemaker overlying the left chest wall with leads in expected position . Clips are seen in the left upper quadrant . Post radiation changes in the upper lungs are stable .
    OUTPUT:
    
New interstitial opacities may be due to clinically suspected pulmonary edema . However , in the absence of cardiac enlargement , additional considerations include atypical pneumonia , noninfectious causes of pneumonitis and malignant lung disease .