Radiologic signA radiologic sign is an objective indication of some medical fact that is detected by a physician during radiologic examination with medical imaging.Examples Double [decidual sac sign] Face of the [giant panda sign] Football sign Golden S sign Hampton's hump Hilum overlay sign Kerley lines Mickey Mouse sign Omental cake Peribronchial cuffing Pneumatosis intestinalis Rigler's sign Westermark sign