Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Surgical chain sutures are seen overlying the left mid lung . There is rightward rotation of the patient on the current examination . Allowing for changes due to this , the cardiomediastinal silhouettes are within normal limits . Central pulmonary vascular engorgement and left greater than right diffuse interstitial prominence likely reflects asymmetric mild pulmonary edema , left greater than right . More focal opacity within left lung apex may reflect superimposed infection . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Left greater than right mild asymmetric pulmonary edema . Focal opacity within the left lung apex may reflect superimposed infection .