Stenosis is the closing of the ear canal. What is the material makeup that causes the canal to close? Is it hard bone? Soft bone? Is it a putty-like material? Just curious.
The material makeup? Stenosis of the aural canal can be congenital in children. What the exact makeup with congenital defect I don’t know. It can be acquired later from the following issues. This could be caused by several things. A build up of cerumen, frequent ear infections, inflammation of the tissues in the aural canal. It can also be caused by trauma to the ear or tumors.
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I found this nice diagram of the ear. https://www.frontiersin.org/files/Articles/617354/fcell-08-617354-HTML-r1/image_m/fcell-08-617354-g001.jpg
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Congenital stenosis is often a developmental malformation of the bone. Aquired stenosis is usually fibrosis–some inflammatory response resulting in tissue thickening/scarring. So it depends on what type you’re talking about.
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