Welcome to JA and thanks for this question. I just came online to see that you had been waiting for sometime so ill quickly answer this question for you. First off Cortical auditory impairment and central hearing loss are one and the same thing, they are two names for the same issue which is that the hearing loss is stemming from a problem in the auditory cortex or the auditory nerve. This means that the area of the brain which processes sound may be affected by various conditions which is leading to the mild hearing loss. Now since the problem is thought to be in the brain itself so YES it is protocol to get a MRI done in these situations to be on the safe side. The reason for the MRI being that a MRI would tell us if there is any growth or lesion on the brain which is causing the hearing loss. Now that being said in 99% of the cases there are NO LESIONS or GROWTH WHATSOEVER, the reason we do a MRI is because of the 1%, we dont want to miss anything which can be treated easily such as removal of the growth which can then restore the hearing loss. Given that she is healthy and has no other symptoms, i think your doctor is correct in saying that the MRI will be normal but it should be done nonetheless as then we will have proof of no problem existing in the brain (such as the lesions i mentioned)
So basically when we consider central hearing loss we always do get a MRI done and your doctor is right many a time a cause cannot be determined. Sometimes a viral infection in the past could have damaged the nerves or even the auditory cortex, or it could have been a developmental issue or even an infection in the past, there is just no way to know for sure.
But a MRI is still done, you dont need to worry here, IF your daughter did have a growth on the brain etc then she SHOULD HAVE exhibited some symptoms. The MRI is just to confirm that there is nothing there as we cannot actually SEE inside the brain, but we can guess accurately that the brain is likely to be normal. The MRI is just to confirm our suspicions of the brain being normal.
Do you have any more questions?
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