A ghost image appears in the right sinus area on a panoramic radiograph. What is MOST likely causing this?

In panoramic radiography, ghost images appear on the OPPOSITE side and higher than the actual object. A real object on the RIGHT side produces a ghost on the LEFT — and vice versa. Therefore, a ghost image on the RIGHT sinus is caused by the LEFT earring. Ghost images are always more diffuse, higher, and on the opposite side.