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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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|
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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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|
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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|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: 3px; font-size 190%; margin: 1px; width: 900px; align=" center "
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| ! colspan="6" style="background: #5579FF; width: 600px:" | {{fontcolor|#FFF|Main grading systems for acoustic neuromas}}
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| |-
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| Tumor size (CPA Maximum diameter)}}
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| Sterker}}
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| House}}
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| Koos}}
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| Samii}}
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| ! style="background: #4479BA; " | {{fontcolor|#FFF| Tumor Description}}
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | 0
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| (intracanalicular)
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| ! style="padding: 10px 10px; background: #ABCDEF; " |Tube type
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| ! style="padding: 10px 10px; background: #ABCDEF; " |intracanalicular
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| ! style="padding: 10px 10px; background: #eee000; " |Grade I
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| ! style="padding: 10px 10px; background: #ace123; " |T1
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| ! style="padding: 10px 10px; background: #ace123; " |Confining to IAC
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | <10 mm
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| ! rowspan="2" style="padding: 10px 10px; background: #ABCDEF; " | Small
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 1
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| (Small)
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| ! rowspan="3" style="padding: 10px 10px; background: #eee000; " | Grade II
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| ! style="padding: 10px 10px; background: #ace123; " | T2
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| ! style="padding: 10px 10px; background: #ace123; " | Superpassing IAC
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | <15 mm
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| ! rowspan="2" style="padding: 10px 10px; background: #ABCDEF; " | Grade 2
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| (Medium)
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| ! rowspan="2" style="padding: 10px 10px; background: #ace123; " | T3a
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| ! rowspan="2" style="padding: 10px 10px; background: #ace123; " | Tumor occupying CPA
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | <20 mm
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| ! rowspan="2" style="padding: 10px 10px; background: #ABCDEF; " | Mild
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | <3o mm
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 3
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| (Moderately Large)
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| ! style="padding: 10px 10px; background: #eee000; " | Grade III
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| ! style="padding: 10px 10px; background: #ace123; " | T3b
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| ! style="padding: 10px 10px; background: #ace123; " | Tumor occupying CPA and contacting
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| the brainstem without compression
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | <40 mm
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Large
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 4
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| (Large)
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| ! rowspan="2" style="padding: 10px 10px; background: #eee000; " | Grade IV
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| ! style="padding: 10px 10px; background: #ace123; " | T4a
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| ! style="padding: 10px 10px; background: #ace123; " | Tumor compressing the brainstem
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| |-
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| ! style="padding: 10px 10px; background: #ABCDEF; " | >40 mm
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Huge
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| ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 5
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| (Giant)
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| ! style="padding: 10px 10px; background: #ace123; " | T4b
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| ! style="padding: 10px 10px; background: #ace123; " | sever brainstem displacement and deformation of fourth ventricle under tumor compression
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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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