PMC5763086_01
(a) High-resolution computed tomography (HRCT) temporal bone axial view showing homogeneous soft-tissue density filling the left EAC extending into the mastoid cavity destroying the posterior wall of EAC, focal destruction of anterior canal wall. Medial bowing of the tympanic membrane can also be seen. (b) High-resolution computed tomography (HRCT) temporal bone coronal view showing homogeneous soft-tissue density filling the left EAC extending superiorly and inferiorly with focal bony destruction.
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fig1
Focal bony destruction could be seen in inferior EAC (Figure 1).
Pure tone audiometry. Right ear: normal with 13 dB; left ear: moderate conductive type hearing loss with 47 dB.
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fig2
Huge cavity was formed by the disease with facial nerve dehiscent at horizontal, 2nd genu, and vertical portion with intact sheath.
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fig3
The facial nerve was dehiscent at the horizontal, 2nd genu, and vertical portion with an intact sheath (Figure 3).