PMC6681592_01
Contrast-enhanced ear MRI axial section. Approximately 2 cm mass showing peripheral contrast enhancement in the right mastoid antrum (white arrow).
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There was no restriction in diffusion-weighted imaging of this lesion, and thus, cholesteatoma was not considered as a diagnosis (Figures 1 and 2).
There was no restriction in diffusion-weighted imaging of this lesion (black arrow).
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There was no restriction in diffusion-weighted imaging of this lesion, and thus, cholesteatoma was not considered as a diagnosis (Figures 1 and 2).
Coronal section of temporal bone CT. A mass obliterates the outer ear pathway and destroys the mastoid cells and mastoid antrum. The mass extends to the middle ear. The mass was caused by ossicular chain and tegmen tympani defects. White arrow: Tegmen tympani defect. Black arrow: defect in superficial semicircular canal.
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fig3
The patient's temporal bone CT images were reported as soft tissue obliterating the right external ear canal, showing extension to the middle ear cavity, causing destruction in the ossicular chain, mastoid antrum, tegmen tympani, and mastoideum (Figure 3).
Axial section of temporal bone CT. Bilaterally, the maxillary sinuses have a natural appearance. The nasal cavity has no additional pathology except deviation of the septum.
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Examination and imaging of the sinonasal region showed no additional pathology (Figure 4).
Ulcerovegetative mass filling the entire mastoid area and causing tongue tympanoid erosion (intraoperative view).
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There was an ulcerovegetan mass filling the mastoid area (Figure 5) and eroding bone on the horizontal and vertical facial canal.
Exophytic papillomatous tumor with a deep endophytic area covered with squamous epithelium, inverted papilloma-high grade squamous dysplasia (H&E, 10x).
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Pathologic evaluation of the specimen was reported as "IP-high grade squamous dysplasia" (Figure 6).