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What Is Tympanomastoidectomy?

Tympanomastoidectomy is ear surgery that combines tympanoplasty with mastoidectomy. The operation removes disease from the middle ear and mastoid air cells while repairing the eardrum and, when needed, reconstructing the tiny hearing bones. It is commonly performed for cholesteatoma or chronic ear infection that has damaged the tympanic membrane, ossicles, or mastoid. The goals are to create a safe, dry ear, control destructive disease, and preserve or improve hearing when possible.

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What Is Tympanomastoidectomy?

Tympanomastoidectomy is ear surgery that combines tympanoplasty with mastoidectomy. The operation removes disease from the middle ear and mastoid air cells while repairing the eardrum and, when needed, reconstructing the tiny hearing bones. It is commonly performed for cholesteatoma or chronic ear infection that has damaged the tympanic membrane, ossicles, or mastoid. The goals are to create a safe, dry ear, control destructive disease, and preserve or improve hearing when possible.

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Why Is Tympanomastoidectomy Performed?

The procedure is most commonly used for cholesteatoma, a destructive collection of keratinizing skin that can erode bone in the middle ear and mastoid. It can also be used for chronic suppurative otitis media with persistent infection, mastoid disease, or an eardrum perforation that requires reconstruction. Surgery is recommended because medication can control infection temporarily but does not remove an established cholesteatoma. The exact operation depends on disease extent, hearing status, anatomy, prior surgery, and whether the posterior ear-canal wall can be safely preserved.

How Is Tympanomastoidectomy Performed?

The surgeon usually reaches the mastoid through an incision behind the ear and removes diseased mastoid air cells with a surgical drill. Cholesteatoma and infected tissue are cleared from the middle ear, mastoid, and other involved spaces while the facial nerve, inner ear, and major blood vessels are protected. In a canal-wall-up procedure, the posterior ear-canal wall is preserved, while a canal-wall-down procedure removes it to create a larger open mastoid cavity. The eardrum is reconstructed with graft tissue, and ossiculoplasty can be added when the hearing bones are damaged.

What Is Recovery Like After Tympanomastoidectomy?

The ear is usually packed after surgery, and patients keep the operative ear dry while the graft and mastoid cavity heal. Temporary fullness, drainage, mild dizziness, altered taste, and reduced hearing can occur during early recovery. Follow-up visits are used to remove packing, clean the ear, inspect healing, and monitor for residual or recurrent cholesteatoma. Some canal-wall-up operations require planned second-look surgery or imaging surveillance because disease can remain hidden behind preserved structures.

What Are the Risks and Complications?

Possible complications include infection, bleeding, persistent eardrum perforation, hearing loss, dizziness, tinnitus, and recurrent or residual cholesteatoma. Injury to the facial nerve can cause facial weakness, while injury to the chorda tympani can alter taste. Rare complications include inner-ear damage, cerebrospinal fluid leakage, meningitis, or injury to major vascular structures. Canal-wall-down surgery can also require long-term cleaning of the mastoid cavity and ongoing precautions with water exposure.

Frequently Asked Questions About Tympanomastoidectomy

Is tympanomastoidectomy mainly used for cholesteatoma?

Yes. Cholesteatoma is one of the most common reasons for combining mastoidectomy with tympanoplasty because the disease can involve both the middle ear and mastoid.

What is the difference between canal-wall-up and canal-wall-down surgery?

Canal-wall-up surgery preserves the posterior ear-canal wall, while canal-wall-down surgery removes it to create a larger cavity that is easier to inspect for recurrent disease.

Can hearing improve after tympanomastoidectomy?

Yes, particularly when the eardrum and ossicular chain can be reconstructed successfully. Hearing can also remain unchanged or worsen depending on disease severity and inner-ear involvement.

Can cholesteatoma return after surgery?

Yes. Residual or recurrent cholesteatoma is possible, which is why long-term follow-up, imaging, and sometimes second-look surgery are used after treatment.

References

Middle Ear Cholesteatoma. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK448108/. Date Accessed September 11, 2026.

Ossiculoplasty. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK563162/. Date Accessed September 11, 2026.

Mastoid obliteration versus canal wall down or canal wall up mastoidectomy for cholesteatoma: Systematic review and meta-analysis. PubMed. https://pubmed.ncbi.nlm.nih.gov/36586321/. Date Accessed September 11, 2026.

Incidence Rate and Determinants of Recurrent Cholesteatoma Following Surgical Management: A Systematic Review, Subgroup, and Meta-Regression Analysis. PubMed. https://pubmed.ncbi.nlm.nih.gov/41153787/. Date Accessed September 11, 2026.

Tympanomastoidectomy: Comparison between canal wall-down and canal wall-up techniques in surgery for chronic otitis media. PubMed. https://pubmed.ncbi.nlm.nih.gov/25992020/. Date Accessed September 11, 2026.