| The most common surgical procedures included sphenoidectomy, ethmoidectomy, maxillary antrostomy, and middle turbinectomy. |
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| Via this approach, we performed a bilateral ethmoidectomy, anterior skull base resection, sphenoidectomy, subtotal septectomy, partial palatectomy, and nasopharyngectomy. |
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| Computed tomography of the sinuses showed evidence of the ethmoidectomy and a right middle meatal antrostomy in addition to left ethmoid opacification. |
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| Left endoscopic ethmoidectomy was carried out through the anterior face of the left ethmoid bulla using a microdebrider to open the anterior ethmoid area. |
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