Certified Surgical Technologist (CST) Practice Exam

Which of the following damages the mastoid air cells and ossicles of the ear?

1. Meniere's disease

2. Acoustic neuroma

3. Cholesteatoma

4. Otosclerosis

The correct answer is: Cholesteatoma

Cholesteatoma is a destructive and expanding growth of skin cells that often develops in the middle ear and/or the mastoid process. It can occur as a result of chronic ear infections, causing the accumulation of skin and debris. This condition can lead to significant damage to the surrounding structures, particularly the mastoid air cells and ossicles, which are essential for hearing. The presence of a cholesteatoma can induce erosion of the bones within the ear due to its invasive nature, leading to conductive hearing loss and other complications. In contrast, Meniere's disease primarily affects the inner ear and is associated with episodes of vertigo, tinnitus, and hearing loss, but does not cause direct damage to mastoid air cells or ossicles. Acoustic neuroma is a benign tumor that affects the vestibulocochlear nerve, leading to hearing loss and balance issues, but it does not directly damage the structures of the middle ear. Otosclerosis is characterized by abnormal bone growth around the stapes bone, which can result in conductive hearing loss as well but does not specifically damage the mastoid air cells. Thus, cholesteatoma distinctly stands out for its capacity to cause damage to the mastoid air cells and ossicles of the ear