Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy is in place . Sternotomy wires appear intact and appropriately aligned . A left PICC terminates in the low SVC . There are extensive multifocal opacities throughout the lungs bilaterally . Heart size is normal . The mediastinal and hilar contours are normal . There may be small bilateral pleural effusions . No pneumothorax .
    OUTPUT:
    
1 . Appropriate position of lines and tubes . 2 . Extensive multifocal opacities throughout the lungs bilaterally , for which the differential includes multifocal pneumonia , extensive aspiration , alveolar pulmonary edema , or ARDS .