What are the types of benign (noncancerous) ear tumors?

What are the types of benign (noncancerous) ear tumors?

Noncancerous ear tumors can block your ear canal, leading to earwax buildup. Types of benign ear tumors include:

• Acoustic neuromas (also called vestibular schwannomas) form on the vestibular nerve. This nerve in your inner ear connects to your brain.
• Adenomas are rare noncancerous tumors that develop in the middle ear.
• Cholesteatomas are sacs of fluid, air or skin cells that form behind the eardrum in the middle ear. They can lead to hearing loss if not treated.
• Glomus tympanicum paraganglioma affects the tympanic nerve. This nerve in the middle ear connects to the eardrum.
• Keloids are a type of fibrous scar tissue. They can form after an ear piercing or trauma to the outer ear.
• Osteomas and exostoses form on bones in the external ear canal (benign bone tumor).
• Sebaceous cysts contain skin cells and oil. They can develop in the ear canal, behind the ear or on the earlobe. They are also called epidermal inclusion cysts.