Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right mid lung and bibasilar patchy opacities may in part relate to overlapping structures although underlying infectious process is not excluded . There is no pleural effusion or pneumothorax . No pulmonary edema . Cardiac and mediastinal silhouettes are unremarkable .
    OUTPUT:
    
Patchy right mid lung and bibasilar opacities may be due to overlapping structures although infectious process is not excluded .