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Figure 5: The opticocarotid recess and its adjacent structures. The ethmoid sinus in this specimen developed well. The back wall was reared and the posterior ethmoid sinus formed suprasphenoid cells. The opticocarotid recess was located in the Onodi cell. Posterior ethmoid sinus (PE), optic nerve protuberance (ONP), tuberculum sellae recess (TSR), sphenoid sinus (SS), clivus recess (CR), sellar floor (SF), carotid protuberance (CAP), opticocarotid recess (OCR)

Figure 5: The opticocarotid recess and its adjacent structures. The ethmoid sinus in this specimen developed well. The back wall was reared and the posterior ethmoid sinus formed suprasphenoid cells. The opticocarotid recess was located in the Onodi cell. Posterior ethmoid sinus (PE), optic nerve protuberance (ONP), tuberculum sellae recess (TSR), sphenoid sinus (SS), clivus recess (CR), sellar floor (SF), carotid protuberance (CAP), opticocarotid recess (OCR)