case_images: PMC6681592_01
case_images: Contrast-enhanced ear MRI axial section. Approximately 2 cm mass showing peripheral contrast enhancement in the right mastoid antrum (white arrow).
case_images: CRIOT2019-3041570.001.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.001.jpg
case_images: fig1
case_images: There was no restriction in diffusion-weighted imaging of this lesion, and thus, cholesteatoma was not considered as a diagnosis (Figures 1 and 2).
case_images: There was no restriction in diffusion-weighted imaging of this lesion (black arrow).
case_images: CRIOT2019-3041570.002.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.002.jpg
case_images: fig2
case_images: There was no restriction in diffusion-weighted imaging of this lesion, and thus, cholesteatoma was not considered as a diagnosis (Figures 1 and 2).
case_images: 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.
case_images: CRIOT2019-3041570.003.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.003.jpg
case_images: fig3
case_images: 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).
case_images: 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.
case_images: CRIOT2019-3041570.004.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.004.jpg
case_images: fig4
case_images: Examination and imaging of the sinonasal region showed no additional pathology (Figure 4).
case_images: Ulcerovegetative mass filling the entire mastoid area and causing tongue tympanoid erosion (intraoperative view).
case_images: CRIOT2019-3041570.005.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.005.jpg
case_images: fig5
case_images: There was an ulcerovegetan mass filling the mastoid area (Figure 5) and eroding bone on the horizontal and vertical facial canal.
case_images: Exophytic papillomatous tumor with a deep endophytic area covered with squamous epithelium, inverted papilloma-high grade squamous dysplasia (H&E, 10x).
case_images: CRIOT2019-3041570.006.jpg
case_images: PMC6681592_01_CRIOT2019-3041570.006.jpg
case_images: fig6
case_images: Pathologic evaluation of the specimen was reported as "IP-high grade squamous dysplasia" (Figure 6).