Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Cervical spinal hardware is seen in the lower neck and right shoulder prosthesis is noted . There is diffuse pulmonary interstitial edema . A subtle superimposed pneumonia would be difficult to exclude . No large pleural effusion or pneumothorax is seen . Heart size remains top normal . Mediastinal contour is stable . No acute bony injuries are seen .
    OUTPUT:
    
Mild interstitial edema . Recommend post - diuresis films to exclude underlying subtle pneumonia .