Male, 46 years old, with history of recurrent/metastatic T4 N3 nasopharyngeal carcinoma status post chemotherapy. An enhancing lesion centered on the right cavernous sinus with extension into the middle cranial fossa continues to decrease in size. The lesion measures up to 22 x 8 mm in the axial plane, previously 25 x 20 mm. Mild treatment related alterations are demonstrated in the nasopharynx without any evidence to suggest recurrent tumor.The brain parenchyma itself is free of edema, mass effect and pathologic enhancement. No intracranial hemorrhage or any abnormal extra axial fluid collection is detected. Diffusion-weighted images are unremarkable. Ventricles are normal in size and morphology.
1.Continued interval decrease in the size of the lesion involving the right cavernous sinus and adjacent middle cranial fossa.2.Stable treatment related findings in the nasopharynx with no evidence to suggest recurrent tumor.3.The remainder of the brain is unremarkable.