S/p craniotomy. Since the prior examination the patient has undergone suboccipital craniotomy. Air bubbles are identified in the suprasellar cistern and other basal cisterns as well as along the craniotomy site.The cervicomedullary junction is partially obscured by artifact.There is hyperdense thickening of tissues within the left cavernous sinus measuring 20 x 10 mm in axial dimensions identified on the recent MRI of the brain exam extending into the left superior orbital fissure.
1.Since the prior examination and the patient's undergone suboccipital craniotomy. The cervical medullary junction is not well evaluated. This is the location of the patient's known lesion.2.A mass in the left cavernous sinus is not present which is hyperdense on this CT scan appeared it does not appear substantially different than the exam from July of 2006 or the MRI from September of 2010.