Fisch reported a staging system for patients with nsopharyngeal angiofibroma.
Tumor Location
Stage
nasal cavity nasopharynx without bone destruction
I
bone destruction with invasion into pterygomaxillary fossa and paranasal sinuses
II
invasion into infratemporal fossa, orbit and parasellar region, but lateral to the cavernous sinus
III
invasion into cavernous sinus, region of the optic chiasm, and pituitary fossa
IV
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Specialty: Otolaryngology
