Figure 1D. CT (Preoperatively) (Coronal) shows expansion of lesion to left pterygoid process, temporal bone

From

Arachnoid Cyst in the Sphenoid Sinus Presented with Headache and Proptosis

Asif Salimov, Serdar Ozer, Celil Gocer, Burce Mocan, Riza Onder Gunaydin, Omer Taskin Yucel

American Journal of Medical Case Reports. 2014, 2(11), 256-258 doi:10.12691/ajmcr-2-11-9