Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear of focal consolidation , effusion , or pneumothorax . On the frontal view , the cardiomediastinal silhouette is within normal limits , however . On the lateral view , there is increased density projecting over the anterior mediastinum in the region of the arch . Some of this may be technical in nature ; however , given density is greater than expected , and more dense than the cardiac silhouette , repeat exam is suggested to exclude underlying lesion in the anterior mediastinum . Osseous and soft tissue structures are unremarkable .
    OUTPUT:
    
Increased density projecting over the anterior mediastinum on the lateral view , this could be potentially technical in nature ; however , repeat lateral view is suggested to reevluate , otherwise CT scan may be indicated .