Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest demonstrate vague bilateral perihilar ground glass opacities which in an asthmatic favors an atypical airways infection / inflammatory process . Difficult to exclude congestion and edema however and clinical correlation is advised . Sternotomy wires are noted . No pneumothorax or effusion .
    OUTPUT:
    
Prominence of interstitial markings may represent viral or atypical infection . Pulmonary congestion is difficult to exclude given the patient 's cardiac history .