Mastoidectomy surgery may sound like something involving a mysterious body part that appeared without warning on an anatomy quiz. In reality, the mastoid is the section of skull immediately behind the ear. Inside it is a network of small, air-filled spaces connected to the middle ear.
When infection, abnormal skin growth, or another disease enters those spaces, medication and routine ear care may not be enough. A mastoidectomy allows an ear surgeon to remove diseased tissue, control infection, protect nearby structures, and create what specialists often call a safe, dry ear.
The operation can range from a relatively limited cleaning of the mastoid air cells to a more extensive procedure involving the ear canal, eardrum, or tiny hearing bones. The exact approach depends on the condition being treated, the amount of damage present, previous operations, and whether preserving or reconstructing hearing is possible.
What is mastoidectomy surgery?
A mastoidectomy is an operation that removes infected, inflamed, or otherwise abnormal tissue from the mastoid portion of the temporal bone. Although people often imagine that the entire bone is removed, that is usually not what happens. Surgeons typically open selected mastoid air cells and remove the thin bony partitions and diseased tissue within the affected area.
The mastoid resembles a small honeycomb. Unfortunately, bacteria and abnormal skin cells also appreciate a cozy honeycomb, especially when drainage and ventilation are poor. Surgery gives the physician direct access to areas that ear drops and oral medications may not reach effectively.
Mastoidectomy is commonly performed by an otologist or neurotologist, an ear, nose, and throat physician with advanced training in disorders of the ear and temporal bone. It is generally completed under general anesthesia in a hospital or outpatient surgical center.
What conditions can require a mastoidectomy?
Cholesteatoma
Cholesteatoma is one of the most common reasons for mastoid surgery. It is a noncancerous collection of skin cells that develops behind the eardrum or within the middle ear and mastoid. Despite the name, it is not caused by cholesterol.
A cholesteatoma may begin when part of the eardrum retracts inward and forms a pocket that collects dead skin. It can also develop after an eardrum perforation, chronic infection, previous surgery, or, less commonly, as a congenital condition.
The growth can gradually erode the delicate bones responsible for hearing. It may also affect the facial nerve, inner ear, or nearby structures separating the ear from the brain. Cleaning the visible ear canal may temporarily reduce drainage, but it does not remove disease hidden deeper inside the middle ear or mastoid.
Acute or chronic mastoiditis
Mastoiditis occurs when infection and inflammation involve the mastoid air cells, often after a middle ear infection spreads beyond its original location. Symptoms may include persistent ear pain, fever, drainage, hearing loss, swelling or redness behind the ear, and an ear that appears pushed outward.
Many cases are initially treated with antibiotics and drainage of the middle ear. Surgery may become necessary when infection does not improve, an abscess develops, bone is being destroyed, or there is concern that the infection is spreading toward the brain, major blood vessels, facial nerve, or inner ear.
Chronic middle ear infection
Some people experience repeated or long-lasting middle ear infections accompanied by a perforated eardrum, ongoing drainage, damaged hearing bones, or persistent mastoid inflammation. When medication and office-based care cannot create a consistently dry and healthy ear, tympanoplasty and mastoidectomy may be performed together.
Cochlear implantation and other ear procedures
A limited mastoidectomy may be used as a surgical pathway during cochlear implant placement. The mastoid route can also provide access for selected operations involving the facial nerve, balance organs, inner ear, endolymphatic sac, petrous apex, or lateral skull base.
Tumors or abnormal tissue
Benign or malignant growths involving the temporal bone, mastoid, ear canal, or nearby structures may occasionally require mastoid surgery. In these cases, the mastoidectomy is often one part of a larger, carefully planned operation.
How doctors evaluate the ear before surgery
The decision to perform mastoidectomy is not based on ear discomfort alone. The surgeon needs to determine where the disease is located, how far it has spread, and which structures may already be affected.
The evaluation commonly includes an examination of the ear canal and eardrum using an otoscope, microscope, or endoscope. An audiogram measures hearing in both ears and helps establish a baseline before surgery. Tympanometry may assess eardrum movement and middle ear pressure.
A computed tomography scan of the temporal bones can show mastoid anatomy, bone erosion, middle ear disease, and the relationship between the abnormal tissue and important structures. Magnetic resonance imaging, sometimes with specialized diffusion-weighted sequences, may be used when a cholesteatoma or complication involving soft tissue is suspected.
Patients should provide a complete list of medications, vitamins, supplements, allergies, and medical conditions. Blood-thinning medications may need adjustment, but only under the direction of the prescribing clinician and surgical team. Smoking should be stopped whenever possible because it can interfere with healing and increase surgical risks.
Types of mastoidectomy procedures
Simple or cortical mastoidectomy
A simple mastoidectomy opens the mastoid cortex and removes infected or diseased air cells while preserving the ear canal wall and most middle ear structures. It may be used for selected infections, drainage, or surgical access.
Canal-wall-up mastoidectomy
During a canal-wall-up procedure, the surgeon clears disease from the mastoid and middle ear while preserving the posterior wall of the external ear canal. Keeping this wall intact maintains more normal ear anatomy and usually avoids creating a large open mastoid cavity.
However, preserving the canal wall can make hidden corners more difficult to inspect. Depending on the extent of a cholesteatoma, the patient may need close imaging surveillance or a planned second-look operation to check for residual or recurrent disease.
Canal-wall-down mastoidectomy
In a canal-wall-down procedure, part of the bony ear canal wall is removed, connecting the mastoid and ear canal into a larger open cavity. This approach can provide excellent visibility and may be chosen for extensive cholesteatoma, recurrent disease, poor follow-up reliability, or anatomy that makes complete removal difficult with a closed technique.
The trade-off is that the resulting mastoid cavity may require periodic professional cleaning. Some patients must also take additional precautions around water exposure, hearing aids, or recurrent moisture.
Modified radical or radical mastoidectomy
These older terms generally describe more extensive surgery designed to eliminate dangerous disease. A modified radical procedure attempts to preserve useful hearing structures when possible. A traditional radical mastoidectomy removes more middle ear structures and prioritizes disease control over hearing preservation. Terminology varies among surgeons, so patients should ask exactly what their proposed operation involves.
Tympanomastoidectomy
Mastoidectomy is frequently combined with tympanoplasty, which repairs the eardrum or reconstructs the middle ear. If the ossiclesthe malleus, incus, and stapeshave been damaged, the surgeon may reshape remaining bone or use a prosthesis to rebuild the sound-conduction system.
What happens during mastoidectomy surgery?
After general anesthesia is administered, the surgical team positions and protects the patient’s head. Facial nerve monitoring may be used to help the surgeon identify and protect the nerve controlling movement on that side of the face.
The surgeon usually reaches the mastoid through an incision hidden behind the ear, although some procedures may also use an approach through the ear canal. A microscope, endoscope, or combination of both provides a magnified view.
A specialized drill opens the mastoid and carefully removes selected air-cell partitions. Continuous irrigation helps cool the area and clear bone dust. The surgeon follows recognizable anatomical landmarks while working near the facial nerve, balance organs, inner ear, major veins, and the thin bone separating the ear from the cranial cavity.
All visible infection, cholesteatoma, granulation tissue, or abnormal bone is removed. If necessary, the surgeon enters the middle ear, repairs the eardrum, reconstructs hearing bones, widens the ear canal opening, or fills part of the mastoid cavity with tissue or other approved material.
At the end of the operation, absorbable material or packing may be placed in the ear. The incision is closed, and a protective dressing is applied. Many mastoidectomies take approximately two to three hours, although complex revision surgery or extensive reconstruction can take longer.
Benefits of mastoidectomy surgery
The principal benefit is disease control. Removing infected or destructive tissue can stop chronic drainage, reduce recurring infections, and prevent additional damage. For cholesteatoma, surgery is usually the only definitive way to remove the abnormal skin growth.
Mastoidectomy can also lower the risk of severe complications, including facial paralysis, permanent hearing loss, labyrinthitis, meningitis, venous sinus thrombosis, and brain abscess. These complications are uncommon, but they explain why surgeons take persistent mastoid disease seriously rather than prescribing another bottle of ear drops and hoping the problem develops better manners.
Hearing may improve when infection is cleared and the eardrum or ossicles are successfully reconstructed. However, hearing improvement is not guaranteed. In many cases, the first goal is to produce a safe ear; hearing rehabilitation is an important but secondary objective.
Other potential benefits include reduced pain, less odor or drainage, fewer medical visits, improved ability to use a hearing aid, and greater confidence about swimming, traveling, sleeping, and participating in everyday activities once the ear has healed.
Risks and possible complications
Mastoidectomy is performed close to several delicate structures, so no surgeon can promise zero risk. The likelihood of complications depends on the severity of disease, previous operations, anatomy, technique, overall health, and the surgeon’s findings during the procedure.
Hearing changes
Temporary muffled hearing is expected while swelling and packing are present. Permanent conductive or sensorineural hearing loss is less common but possible, particularly when disease has already damaged the hearing bones or inner ear. Rarely, hearing can be lost completely in the operated ear.
Facial nerve injury
The facial nerve passes through the temporal bone near the surgical field. Injury can cause weakness or paralysis on the affected side of the face. This complication is uncommon, but risk may be higher when infection, scar tissue, congenital anatomy, or cholesteatoma surrounds the nerve.
Dizziness and balance symptoms
Mild dizziness can occur after surgery. Severe or persistent vertigo may indicate irritation or injury involving the inner ear. Patients should report worsening spinning sensations, vomiting, or trouble walking.
Changes in taste
A small nerve called the chorda tympani carries taste information from part of the tongue and runs through the middle ear. Stretching, manipulating, or removing this nerve may cause a metallic taste, reduced taste sensation, or dryness on one side of the mouth. The change often improves over time but can occasionally persist.
Tinnitus
Ringing, buzzing, or other ear noises may temporarily increase after surgery. In some patients, tinnitus remains unchanged or becomes more noticeable if hearing changes.
Residual or recurrent disease
A cholesteatoma can remain in a hidden area or return later, even after technically successful surgery. Long-term follow-up is essential. Depending on the operation, surveillance may include repeated ear examinations, hearing tests, imaging, or another procedure.
Other surgical risks
Additional complications include bleeding, infection, poor wound healing, scar discomfort, persistent ear drainage, narrowing of the ear canal, problems with a mastoid cavity, cerebrospinal fluid leakage, meningitis, blood clots, and reactions to anesthesia. Serious complications are uncommon, but patients should understand them before signing surgical consent.
Recovery after mastoidectomy
Some patients go home on the day of surgery, while others remain in the hospital overnight. A bulky head dressing may be removed within a day, but packing deeper in the ear can remain for days or weeks according to the surgeon’s plan.
Common early symptoms include soreness behind the ear, pressure, fullness, mild drainage, temporary numbness, jaw discomfort, fatigue, and muffled hearing. Pain is often manageable with prescribed medication or approved over-the-counter pain relievers.
Patients are usually instructed to keep the ear dry, avoid inserting anything into the canal, and take medications exactly as directed. Strenuous exercise, heavy lifting, forceful nose blowing, straining, and air travel may be restricted temporarily. Sneezing with the mouth open may reduce pressure on the healing eardrum.
Many people can return to school, desk work, or light activities in approximately one to two weeks. Full tissue healing may take six to 12 weeks or longer. Hearing can fluctuate during this period, so judging the final result while packing is still present is like reviewing a concert while wearing earmuffs.
Patients should contact the surgical team promptly for heavy bleeding, increasing redness or swelling, worsening pain, foul-smelling drainage, fever, facial weakness, sudden hearing loss, severe vertigo, repeated vomiting, intense headache, confusion, or neck stiffness.
Questions to ask the surgeon
- What condition is the mastoidectomy intended to treat?
- Will the canal wall be preserved or removed?
- Will tympanoplasty or ossicular reconstruction be performed?
- What is the realistic goal for my hearing?
- How likely is residual or recurrent cholesteatoma?
- Will I need a second-look procedure or follow-up imaging?
- How long must I keep the ear dry?
- When can I return to work, exercise, driving, swimming, and flying?
- Will the ear require lifelong professional cleaning?
- Which symptoms should prompt an urgent call or emergency evaluation?
A realistic mastoidectomy experience: what recovery may feel like
The following is a composite experience based on common recovery themes rather than the story of a specific patient. Individual experiences vary considerably, particularly between limited canal-wall-up surgery and more extensive canal-wall-down procedures.
In the week before surgery, the practical details often create more anxiety than the operation itself. Patients may arrange transportation, fill prescriptions, prepare easy meals, move frequently used objects to shoulder height, and create a comfortable sleeping area with extra pillows. Because bending and straining may be discouraged, placing phone chargers, medication, water, and entertainment within easy reach can make recovery less annoying.
On surgery day, the patient checks in, reviews medications and fasting status, and speaks with the surgeon and anesthesiologist. After waking, the operated ear may be covered by a large dressing that looks more dramatic than it feels. Hearing on that side is usually extremely muffled. The ear may feel packed, clogged, or strangely heavy, but severe pain is not inevitable. Many patients describe the first evening as a mixture of sleepiness, mild soreness, and the distinct realization that chewing crunchy food was an unnecessarily ambitious idea.
During the first two or three days, fatigue can be surprisingly noticeable. Mild dizziness may occur when standing quickly. Sleeping with the head elevated can reduce throbbing and swelling, although it may also lead to complicated negotiations with a stack of pillows. Small amounts of blood-tinged drainage can be expected when the surgeon has said it is normal, but heavy bleeding or rapidly worsening symptoms require a call.
By the end of the first week, incision discomfort often improves. The ear can still feel blocked because packing and swelling prevent sound from traveling normally. This temporary hearing reduction sometimes worries patients, even when they were warned about it. A written recovery plan is useful because the half-awake brain heard “hearing may be muffled” before surgery and later translates it into “clearly my ear has resigned.”
Some people notice altered taste or a metallic sensation on one side of the tongue. Others experience brief popping sounds, tinnitus, numbness around the top of the ear, or tenderness when wearing glasses. These sensations may gradually improve as inflammation decreases and nerves recover.
At the first postoperative appointment, the surgeon examines the incision and ear canal and may remove some packing. The process can feel unusual but is generally brief. Hearing may improve immediately, improve gradually, or continue to fluctuate. Additional packing may dissolve or be removed at a later visit.
During weeks two through six, energy and normal routines usually return faster than the ear itself heals. A patient may feel well enough to exercise, swim, or take a flight long before the surgeon considers those activities safe. Following restrictions remains important even when boredom begins presenting itself as medical expertise.
Long-term experiences depend heavily on the surgical technique. After canal-wall-up surgery, the ear may eventually require little special care beyond surveillance. After canal-wall-down surgery, periodic cleaning of the mastoid cavity may become part of routine healthcare. Water precautions or hearing-aid adjustments may also be needed.
Emotionally, many patients describe relief when chronic drainage, odor, pain, or repeated infections finally stop. Others need time to adjust if hearing remains reduced or if additional surgery is planned. A successful outcome does not always mean perfect hearing; often, it means the dangerous disease is gone, the ear is stable, and future hearing rehabilitation can be considered safely.
The most useful recovery lesson is patience. The ear contains tiny structures doing extremely precise work, and they are not famous for healing on a convenient calendar. Keeping follow-up appointments, protecting the ear, and reporting concerning changes gives the surgical result the best opportunity to last.
