"C: cribriform plate"
"L: lamina papyracea"
"O: Onodi cell"
"S: sphenoid sinus"
"E: ethmoidal artery (anterior)"
"For each structure, items to assess include: 1-2"
"O: Onodi cell"
"S: sphenoid sinus"
"E: ethmoidal artery (anterior)"
"Onodi cell"
Expected headings
"Mnemonic"
"Items to assess"