Atypical presentation of intracochlear schwannoma in a child

Serial audiograms showed the progression of her hearing loss over time. In audiogram C, D, E and F, hearing thresholds are shown for the left ear only. Audiogram G was done after the tumor removal, only normal hearing in the right ear shown here and no hearing in the left ear. WRS: word recognition score; CNT: could not test. DNT: did not test.

Magnetic Resonance Imaging (MRI) images (axial view) of the patient's intracochlear schwannoma. In image A, an attenuation of fluid signal within the left cochlea noted on FIESTA sequences, indicated by arrow, suggesting an occupying lesion. The schwannoma, pointed by arrow, can be best seen in image B (post-gadolinium contrast).

Magnetic Resonance Imaging (MRI) image (coronal view) of the tumor, indicated by arrow.

Computer Tomography (CT) image (axial view) of the patient's temporal bone. No enlargement of internal auditory canal (IAC) noted on either side.

Histomicrograph of the tumor shows a solid cellular lesion composed of spindle shaped cells with areas of nuclear palisading (Antoni A areas) characteristic for schwannoma.