History of olfactory neuroblastoma treated with surgery and CRT. There are postoperative findings related to sinonasal surgery and bifrontal craniotomy. There is unchanged diffuse enhancement within the obliterated frontal sinus bed and along the right fovea ethmoidalis. There is unchanged minimal distortion of the right medial rectus muscle, which may be due to scar tissue formation. Otherwise, the orbital contents are unremarkable, without evidence of mass lesions. There is also scattered mucosal thickening and enhancement within the remaining portions of the paranasal sinuses and secretions within the left sphenoid sinus. There is also fluid within the left sphenoid sinus. The right pterygopalatine fossa, foramen rotundum, Vidian canal, and foramen ovale appear intact. The left orbit is unremarkable. There is mild encephalomalacia in the bilateral straight gyri.
1. Post-treatment findings in the sinonasal region without convincing evidence of recurrent olfactory neuroblastoma.2. Findings suggestive of acute sinusitis.