Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is subtle increased interstitial markings particularly in the perihilar regions and mid to lower lungs bilaterally . Findings could due to mild interstitial edema , atypical infectious process is not excluded . No lobar consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
There is subtle increased interstitial markings particularly in the perihilar regions and mid to lower lungs bilaterally . Findings could due to mild interstitial edema , atypical infectious process is not excluded . No lobar consolidation is seen . There is no pleural effusion or pneumothorax . The cardiac and mediastinal silhouettes are stable .