Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Noncontrast computed tomography imaging of the paranasal cavity at the initial diagnosis. (a) Axial and (b) coronal views. We confirmed the presence of soft tissue contrast, suggesting a retention cyst at the rear sphenoid sinus, with thinning at the sella turcica and left internal carotid artery and elimination of the clivus (white arrows).
