Aileen Viray
05/11/2005

CT Scan of the Head

Plain and contrast-enhanced axial CT images of the head show an enhancing mass in the sphenoid sinus, left cavernous sinus and paracavernous region, and left prepontine cistern.
The left side of the basisphenoid appears eroded. 
There are no abnormal density changes in the supra- and infratentorial brain parenchyma.
The corpus callosum, basal nuclei, thalami and brainstem are unremarkable.
The peripheral sulci and the Sylvian, interhemispheric and cerebellar fissures are intact.
The ventricles are not dilated, without deformities or midline shifts.
The sella, intraorbital structures, cerebellopontine angles, petromastoids and bony calvarium are intact.

IMPRESSION:
1. MASS LESION IN THE SPHENOID SINUS, LEFT CAVERNNOUS SINUS, PARACAVERNOUS AND LEFT PRE-PONTINE CISTERN.
2. CONSIDERATIONS INCLUDED NASOPHARYNGEAL CA, SPHENOID SINUS OR NERVE SHEATH TUMOR.
3. SUGGEST MRI OF THE SKULL BASE REGION, AND/OR CT SCAN OF THE NASOPHARYNX FOR FURTHER EVALUATION.