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Criteria for Endoscopic
Tumor Resectability
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Tumor Histology and Biology
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Benign more Resectable (>) than Malignant
Circumscribed >than Invasive
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Location and Adjacent Structures
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Nasal septum > Nasal Wall > Medial Orbit (eye socket) > Sphenoid Sinus/Medial Aspect Optic Nerve > Pterygopalatine Fossa > Extra-dural Cribiform Plate and Frontal Bone > Dural > Brain
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Tumor Size
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Small Tumor with Observable Margins > Large Tumor with Ill-defined Margins
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