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  • Parts A and B courtesy of Bobby S. Korn, MD, PhD; part C courtesy of Rona Z. Silkiss, MD; part D courtesy of Cat N. Burkat, MD.
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    Silent sinus syndrome. A, Patient demonstrates ptosis of the right upper eyelid and deepening of the superior sulcus (arrow). B, Worm’s-eye view shows enophthalmos of the right eye. C, Coronal CT and sagittal CT (D) scans show inferior bowing of the orbital floor (red arrows), concave deformation the lateral wall of the maxillary sinus (yellow arrow), and opacification of the maxillary sinus consistent with silent sinus syndrome.