Middle ear tumors
Updates to Article Attributes
Body
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There are a range of middle ear tumours, which are more likely to be benign than malignant.
Pathology
The three most common middle ear tumours are (not in any particular order as there are differences in the literature) 1-3:
- glomus tympanicum paraganglioma
- congenital cholesteatoma
-
middle ear schwannoma
- most commonly arising from the facial nerve but can also arise from the Jacobson nerve, chorda tympani or the Arnold nerve 2
Other rarer middle ear tumours include 2
Differential diagnosis
If large, these can be difficult to distinguish from direct extension into the middle ear of
- external acoustic meatus malignancies (e.g. squamous or basal cell carcinoma)
- nasopharyngeal carcinoma
- parotid gland neoplasms
- schwannomas originating from outside the middle ear
Additionally, aggressive infections (e.g. malignant otitis externa, tuberculous otomastoiditis, Aspergillus) can appear similar.
-</ul><p>Additionally aggressive infections (e.g. <a href="/articles/malignant-external-otitis">malignant otitis externa</a>, <a href="/articles/tuberculous-otomastoiditis">tuberculous otomastoiditis</a>, <em>Aspergillus</em>) can appear similar.</p>- +</ul><p>Additionally, aggressive infections (e.g. <a href="/articles/malignant-external-otitis">malignant otitis externa</a>, <a href="/articles/tuberculous-otomastoiditis">tuberculous otomastoiditis</a>, <em>Aspergillus</em>) can appear similar.</p>
Images Changes:
Image 4 MRI (T2) ( update )
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Case 4: glomus tympanicum paraganglioma
Image 5 CT (bone window) ( update )
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Case 5: glomus tympanicum paraganglioma
Image 6 MRI (T1 C+ fat sat) ( update )
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Case 6: glomus tympanicum paraganglioma
Image 7 CT (non-contrast) ( update )
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Case 7: glomus tympanicum paraganglioma
Image 8 MRI (T1) ( update )
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Case 8: glomus tympanicum paraganglioma
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