T3N0 poorly differentiated SNUC status post surgical resection, 5-FU, and radiation. There are postoperative findings related to sinonasal tumor resection. There is opacification of the left frontoethmoid recess and anterior ethmoid air cells. There is also persistent complete filling of the left sphenoid sinus with secretions and mucosal thickening and diffuse mucosal thickening within the right maxillary, right sphenoid, left frontal, and right ethmoid sinuses. Otherwise, there is no measurable mass lesion in the sinonasal region. The salivary glands are unremarkable. There is encephalomalacia in the inferior right cerebellar hemisphere. There are bilateral lens implants.
1. Post-treatment findings in the sinonasal region with persistent scattered mucosal inflammatory changes, but no convincing evidence of recurrent tumor. 2. Chronic right PICA territory infarct.