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a-d. CT of the temporal bone in congenital cholesteatoma typically shows a well-pneumatized mastoid -(a) shows lateralization of the TM, (b) can show stapes erosion, (c) can involve the supralabyrinthine area including the geniculate ganglion, and (d) can involve the petrous apex. CT, computed tomography.

a-d. CT of the temporal bone in congenital cholesteatoma typically shows a well-pneumatized mastoid -(a) shows lateralization of the TM, (b) can show stapes erosion, (c) can involve the supralabyrinthine area including the geniculate ganglion, and (d) can involve the petrous apex. CT, computed tomography.

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Figure 1. a-c. (a) White mass behind an intact TM (left ear), (b) white...
Figure 2. a-d. CT of the temporal bone in congenital cholesteatoma...
Figure 3. a-c. Non-echo planar MRI shows (a) hypointense mass on...
Figure 4. a-d. Intraoperative anatomical findings in congenital...
+1 Distribution of 131 Congenital Cholesteatomas by Age
A Unified Classification of Middle Ear and Petrous Bone Congenital Cholesteatomas
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  • Jul 2022
Background: The aim of this study was to classify congenital cholesteatoma along an entire spectrum of involvement ranging from the middle ear to petrous apex. Methods: A total of 131 patients (85 adults and 46 children) underwent operations for congenital cholesteatoma over the duration of 27 years. Results: For most cases, middle ear mucosa...
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Context 1
... can be useful to confirm the diagnosis in cases associated with otitis media with effusion which complicates the diagnosis. Highresolution computed tomography (CT) (Figure 2) of the temporal bone can show the extent of involvement, ossicular status, and surrounding bone involvement. On magnetic resonance imaging (MRI), lesion appears to be hypo-or iso-intense on T1, does not enhance with contrast, and is hyperintense on T2, and diffusion restriction is present on non-echo planer diffusion-weighted sequence (Figure 3). ...
Context 2
... tympanic membrane was intact, the middle ear mucosa was normal, the stapes was the first ossicle to be eroded by the disease, and the mastoids were well-pneumatized. Many of these had epithelial rests located in the supralabyrinthine temporal bone or in the petrous apex ( Figure 2b-d). Both adults and children had facial nerve involvement upon presentation. ...