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| __FORCETOC__
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| {{Acoustic neuroma}}
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| {{CMG}}
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| ==Overview==
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| Acoustic neuroma may be classified into three subtypes based on tumor size and into six subtypes based on tumor location.
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| ==Staging==
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| Acoustic neuroma may be classified into three subtypes based on tumor size and into six subtypes based on tumor location.
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| *'''WIGAND''' has defined a trinomial classification:
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| '''SAMII''' defines six tumour classes:
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| {| style="border: 3px; font-size; 190%; margin: 1px; width: 600px" align="center"
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| ! colspan="2" style="background: #5579FF; width: 600px:" | {{fontcolor|#FFF|Tinnitus grading system for acoustic neuromas}}
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| |-
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| ! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Grade}}
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| ! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Description}}
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |
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| I
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| | style="padding: 10px 10px; background: #F5F5F5; " | No tinnitus
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |
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| II
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| | style="padding: 10px 10px; background: #F5F5F5; " | Intermittent or mild tinnitus, can only be heard when the ambient noise is low
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |
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| III
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| | style="padding: 10px 10px; background: #F5F5F5; " | Persistent or moderate tinnitus, can be heard every day
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |
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| IV
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| | style="padding: 10px 10px; background: #F5F5F5; " | Persistent and severe tinnitus, interfere with work and sleep
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| |-
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| |}
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| {| style="border: 3px; font-size; 190%; margin: 1px; width: 600px" align="center"
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| | colspan="2" valign="top" |Dizziness grading system for acoustic neuromas
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| |+
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| ! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Grade}}
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| ! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Description}}
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" align="center" |
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| I
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| | style="padding: 10px 10px; background: #F5F5F5; " | No dizziness or imbalance
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| |-
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| ! style="padding: 10px 10px ; background: #DCDCDC; font-weigh: bold" align="center" |
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| II
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| | style="padding 5px 5px; background: #F5F5F5; " | Occasional and mild dizziness or imbalance
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| |-
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| ! style="padding 10px 10px; background: #DCDCDC " |
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| III
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| | style="padding 5-x 5-x; background: #F5F5F5 " | Persistent or moderate vertigo or imbalance
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| |-
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| ! style="padding 10px 10px; background: #DCDCDC; " |
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| IV
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| | style="padding 5px 5px; background: #F5F5F5; " |Persistent and severe dizziness or imbalance, disturbing daily life
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| |}
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|
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| {| style="border: 0px; font-size: 90%; margin: 3px; width: 600px" align="center"
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| | valign="top" |
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| |+
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| ! style="background: #4479BA; width: 200px;" | {{fontcolor|#FFF|Stage}}
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| ! style="background: #4479BA; width: 400px;" | {{fontcolor|#FFF|Tumor location}}
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC; font-weight: bold" |
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| :T1
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| | style="padding: 5px 5px; background: #F5F5F5;" |Clear intrameatal tumour (in the bony ear canal)
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
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| :T2
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| | style="padding: 5px 5px; background: #F5F5F5;" |Intra and extrameatal tumour part (within and outside of the bony ear canal)
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
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| :T3a
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| | style="padding: 5px 5px; background: #F5F5F5;" |Tumor fills the cerebellopontine cistern (between the cerebellum and brainstem)
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
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| :T3b
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| | style="padding: 5px 5px; background: #F5F5F5;" |Tumor reaches the brainstem
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
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| :T4a
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| | style="padding: 5px 5px; background: #F5F5F5;" |Tumor compromises the brainstem
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| |-
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| | style="padding: 5px 5px; background: #DCDCDC;font-weight: bold" |
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| :T4b
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| | style="padding: 5px 5px; background: #F5F5F5;" |Tumor compromises the brainstem and displaces the four ventricles (cerebral ventricle)
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| |-
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| |}
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| ==References==
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| {{reflist|2}}
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| {{WikiDoc Help Menu}}
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| {{WikiDoc Sources}}
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| [[Category:Types of cancer]]
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| [[Category:Disease]]
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| [[Category:Up-To-Date]]
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| [[Category:Oncology]]
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| [[Category:Medicine]]
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| [[Category:Otolaryngology]]
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| [[Category:Neurology]]
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| [[Category:Neurosurgery]]
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