T4bN0 left sinonasal squamous cell carcinoma status post treatment. There are postoperative findings related to sinonasal surgery. There is interval decrease in size of the enhancing tumor centered in the left anterior ethmoid cavity with protrusion into the medial left extraconal orbit, measuring 11 x 20 mm, previously 20 x 28 mm. There are persistent obstructed secretions and mucosal thickening in the left frontal sinus and frontoethmoid recess. There is also no evidence of intracranial hemorrhage, mass, or acute infarct. There are unchanged, scattered, nonspecific, foci of non-enhancing T2 hyperintensity in the cerebral white matter. There are small areas of encephalomalacia in the right cerebellar hemisphere. There is no abnormal intracranial enhancement. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation.
Post-treatment findings in the sinonasal region with interval decrease in size of the tumor centered in the left anterior ethmoid cavity with protrusion into the medial left extraconal orbit.