Due to poor air quality, the Academy San Francisco offices will be closed Friday, Nov. 16. 

  • Courtesy of Christine C. Nelson, MD.
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    A, Silent sinus syndrome on the left with spontaneous enophthalmos, deep superior sulcus, and upper eyelid retraction. B, Coronal CT scan of a hypoplastic, opacified left maxillary sinus with reduced volume and displacement of the orbital floor.