I read through the answer for what does Mild mucoperiosteal thickening within the ethmoid and maxillary sinuses mean that has already been posted. I recently had a MRI which reported the same. I also suffer from refractory seizure disorder. I have had a routine EEG and an ambulatory EEG which according to my current neurologist came back normal. I plan on getting a second opinion and going to a different neurologist for testing again just to confirm. My seizure disorders started after a blunt force head trauma. I was on the second story of a party bus in cancun and hit my head against a tree branch because I raised up too early. Anyhow, I am 36 years old, female, 5foot five and 126 pounds.