Final answer:
Otosclerosis is a condition that causes abnormal bone growth in the middle ear, not the external ear. It can lead to hearing loss.
Step-by-step explanation:
Otosclerosis is a condition that causes abnormal bone growth within the middle ear, specifically affecting the movement of the small bones known as ossicles. This condition does not impact the external ear. Over time, the abnormal bone growth can lead to hearing loss as it interferes with the transmission of sound.
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