Andrews-Fisch Classification

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Vocabulary flashcards detailing the specific stages of the Andrews-Fisch Classification system for anatomical involvement and bone destruction.

Last updated 9:44 PM on 7/23/26
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6 Terms

1
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Andrews-Fisch Classification Stage I

Tumor limited to the nasal cavity and cavum without bone destruction.

2
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Andrews-Fisch Classification Stage II

Invasion of the pterygopalatine fossa, maxillary sinus, ethmoid or sphenoid, with bone destruction.

3
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Andrews-Fisch Classification Stage IIIa

Involvement of infratemporal fossa or orbital fossa, without intracranial involvement.

4
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Andrews-Fisch Classification Stage IIIb

Stage IIIa with extradural intracranial involvement (parasellar).

5
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Andrews-Fisch Classification Stage IVa

Intradural extension without involvement of the cavernous sinus, hypophysis or optic chiasm.

6
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Andrews-Fisch Classification Stage IVb

Involvement of cavernous sinus, hypophysis or optic chiasm.