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CONGENITAL EAR RADIOLOGY External and Middle Ear · The middle ear is undersized and disorganised....
Transcript of CONGENITAL EAR RADIOLOGY External and Middle Ear · The middle ear is undersized and disorganised....
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CONGENITAL EAR RADIOLOGY
External and Middle Ear
© Bruce Black MD
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Right canal atresia. The middle ear is undersized and disorganised. Normal basal cochlear turn. Left side normal.
© Bruce Black MD
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Right EAC atresia, middle ear poorly formed. Middle ear reconstruction inadvisable.
© Bruce Black MD
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Atresia of the EAC on the right. Cellular and aerated bone occludes the approaches to the middle ear site, which is of
adequate dimension. © Bruce Black MD
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Slightly superior cut showing a deformed malleus-incus mass abnormally lateral to the middle ear site.
© Bruce Black MD
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Bilateral canal atresia. Marked under-development of the middle ears, Lt worse. Misshapen ossicle mass in the Rt
ear, probably fused to the attic wall. © Bruce Black MD
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Same case, demonstrating the course of the horizontal facial nerves in normal position.
© Bruce Black MD
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Goldenhar syndrome. Narrow and tortuous Rt EAC, disorganised middle ear.
© Bruce Black MD
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Same case, deep Lt bony atresia, better aerated middle ear cleft, small distorted ossicular mass.
© Bruce Black MD
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Bilateral canal atresia. There is unusually advanced aeration of the bone overlying the middle ears and
superficial bony closure of the left EAC. Normal cochleas. © Bruce Black MD i
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Similar case, mature male. Advanced aeration but absent EACs. Suitable for canalplasty and tympanoplasty.
© Bruce Black MD
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Bilateral microtia with narrow EACs. On the left the canal is narrow, but patent, with some debris. On the right a large
inclusion cholesteatoma fills the canal. Poor tympanoplasty prospects © Bruce Black MD
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Same case, coronal view demonstrating the right inclusion, with minor aeration in the deep canal. The middle ear is
shallow and featureless. © Bruce Black MD
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Posterior section, showing partial aeration of the rear EAC, around the keratin mass.
© Bruce Black MD
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Goldenhar syndrome. A narrow and tortuous canal is seen on the left, with a poorly developed and thick membrane.
The middle ear is deep but well aerated. Absent right EAC, bony atresia.
© Bruce Black MD
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3D radiological lateral view of the normal mastoid, EAC and tempo-mandibular joint relationship.
© Bruce Black MD
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Subluxation of the TMJ into the EAC in a case of canal atresia. A subluxed joint occludes surgical access to the
middle ear site and may preclude reconstruction. © Bruce Black MD
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Right deep EAC atresia. Bony plate sealing off the middle ear.
© Bruce Black MD
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Right canal atresia and middle ear deformity. There is a thick bony atretic plate and an undersized middle ear.
Poor hearin repair prognosis. Lt normal. © Bruce Black MD
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