Acoustic neuroma staging: Difference between revisions
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{| style="border: 3px; font-size 190%; margin: 1px; width: | {| style="border: 3px; font-size 190%; margin: 1px; width: 830px; align=" center " | ||
! colspan="6" style="background: #5579FF; width: 600px:" | {{fontcolor|#FFF|Main grading systems for acoustic neuromas}} | ! colspan="6" style="background: #5579FF; width: 600px:" | {{fontcolor|#FFF|Main grading systems for acoustic neuromas}} | ||
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! style="padding: 10px 10px; background: #ABCDEF; " |Tube type | ! style="padding: 10px 10px; background: #ABCDEF; " |Tube type | ||
! style="padding: 10px 10px; background: #ABCDEF; " |intracanalicular | ! style="padding: 10px 10px; background: #ABCDEF; " |intracanalicular | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #ace123; " |Grade I | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " |T1 | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " |Confining to IAC | ||
|- | |- | ||
! style="padding: 10px 10px; background: #ABCDEF; " | ≤10 mm | ! style="padding: 10px 10px; background: #ABCDEF; " | ≤10 mm | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | Grade 1 | ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 1 | ||
(Small) | (Small) | ||
! rowspan="3" style="padding: 10px 10px; background: # | ! rowspan="3" style="padding: 10px 10px; background: #ace123; " | Grade II | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | T2 | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | Superpassing IAC | ||
|- | |- | ||
! style="padding: 10px 10px; background: #ABCDEF; " | ≤15 mm | ! style="padding: 10px 10px; background: #ABCDEF; " | ≤15 mm | ||
! rowspan="2" style="padding: 10px 10px; background: #ABCDEF; " | Grade 2 | ! rowspan="2" style="padding: 10px 10px; background: #ABCDEF; " | Grade 2 | ||
(Medium) | (Medium) | ||
! rowspan="2" style="padding: 10px 10px; background: # | ! rowspan="2" style="padding: 10px 10px; background: #eee000; " | T3a | ||
! rowspan="2" style="padding: 10px 10px; background: # | ! rowspan="2" style="padding: 10px 10px; background: #eee000; " | Tumor occupying CPA | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | ≤20 mm | ! style="padding: 10px 10px; background: #ABCDEF; " | ≤20 mm | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | Grade 3 | ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 3 | ||
(Moderately Large) | (Moderately Large) | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #ace123; " | Grade III | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | T3b | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | Tumor occupying CPA and contacting | ||
the brainstem without compression | the brainstem without compression | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | Grade 4 | ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 4 | ||
(Large) | (Large) | ||
! rowspan="2" style="padding: 10px 10px; background: # | ! rowspan="2" style="padding: 10px 10px; background: #ace123; " | Grade IV | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | T4a | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | Tumor compressing the brainstem | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | >40 mm | ! style="padding: 10px 10px; background: #ABCDEF; " | >40 mm | ||
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! style="padding: 10px 10px; background: #ABCDEF; " | Grade 5 | ! style="padding: 10px 10px; background: #ABCDEF; " | Grade 5 | ||
(Giant) | (Giant) | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | T4b | ||
! style="padding: 10px 10px; background: # | ! style="padding: 10px 10px; background: #eee000; " | sever brainstem displacement and deformation of fourth ventricle under tumor compression | ||
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Revision as of 22:26, 23 May 2018
Acoustic neuroma Microchapters | |
Diagnosis | |
---|---|
Treatment | |
Case Studies | |
Acoustic neuroma staging On the Web | |
American Roentgen Ray Society Images of Acoustic neuroma staging | |
Risk calculators and risk factors for Acoustic neuroma staging | |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Acoustic neuroma may be classified into three subtypes based on tumor size and into six subtypes based on tumor location.
Staging
Acoustic neuroma may be classified into three subtypes based on tumor size and into six subtypes based on tumor location.
- WIGAND has defined a trinomial classification:
SAMII defines six tumour classes:
Tinnitus grading system for acoustic neuromas | |
---|---|
Grade | Description |
I |
No tinnitus |
II |
Intermittent or mild tinnitus, can only be heard when the ambient noise is low |
III |
Persistent or moderate tinnitus, can be heard every day |
IV |
Persistent and severe tinnitus, interfere with work and sleep |
Dizziness grading system for acoustic neuromas | |
---|---|
Grade | Description |
I |
No dizziness or imbalance |
II |
Occasional and mild dizziness or imbalance |
III |
Persistent or moderate vertigo or imbalance |
IV |
Persistent and severe dizziness or imbalance, disturbing daily life |
|-
Main grading systems for acoustic neuromas | |||||
---|---|---|---|---|---|
Tumor size (CPA Maximum diameter) | Sterker | House | Koos | Samii | Tumor Description |
0
(intracanalicular) |
Tube type | intracanalicular | Grade I | T1 | Confining to IAC |
≤10 mm | Small | Grade 1
(Small) |
Grade II | T2 | Superpassing IAC |
≤15 mm | Grade 2
(Medium) |
T3a | Tumor occupying CPA | ||
≤20 mm | Mild | ||||
≤3o mm | Grade 3
(Moderately Large) |
Grade III | T3b | Tumor occupying CPA and contacting
the brainstem without compression | |
≤40 mm | Large | Grade 4
(Large) |
Grade IV | T4a | Tumor compressing the brainstem |
>40 mm | Huge | Grade 5
(Giant) |
T4b | sever brainstem displacement and deformation of fourth ventricle under tumor compression |