Overview

What Is a Cholesteatoma of the Middle Ear?

A cholesteatoma is an abnormal collection of skin cells in the middle ear or nearby spaces behind the eardrum. It is not usually cancerous, but it can continue to enlarge. If it is not treated, it may damage the tiny bones involved in hearing and other nearby structures. It can affect children or adults, often after ongoing Eustachian tube or middle-ear problems.

Symptoms

Cholesteatoma Symptoms

  • Persistent or foul-smelling ear drainage
  • Hearing loss
  • Ear fullness or pressure
  • Repeated ear infections
  • Ear pain
  • Dizziness
  • Ringing in the ear (tinnitus)

Cholesteatoma symptoms may develop gradually, so changes can be easy to overlook. A visible white area, white bump in the ear canal, or growth in or behind the ear should be assessed rather than self-cleaned. What looks like white stuff in the ear or unexplained whiteness in the ear may have several causes and cannot be diagnosed reliably from appearance alone.

Causes

Causes of Middle Ear Cholesteatoma

Poor Eustachian tube function can create negative pressure behind the eardrum. This pressure may pull part of the eardrum inward, forming a pocket that traps skin cells. Over time, the trapped cells can build up into a cholesteatoma.

  • Repeated middle-ear infections can cause inflammation and changes that allow skin cells to collect.
  • A persistent eardrum perforation or previous ear surgery can provide a pathway for abnormal skin-cell buildup.
  • A rare congenital cholesteatoma can be present from birth, even without a history of ear infections.

Risk Factors

Risk Factors for Cholesteatoma

  • Recurrent middle-ear infections increase the chance of chronic changes behind the eardrum.
  • Chronic Eustachian tube dysfunction can cause ongoing pressure problems in the middle ear.
  • Long-term fluid or pressure problems can contribute to retraction of the eardrum.
  • A hole in the eardrum may allow abnormal skin-cell growth into the middle ear.
  • Previous ear surgery can alter the ear’s structure and increase risk in some people.
  • A congenital abnormality may cause a cholesteatoma to develop from birth.

Many cholesteatoma risk factors are medical or structural rather than lifestyle-related, so they cannot always be changed. Prompt treatment and follow-up for persistent ear disease may reduce the chance of progression and help detect an ear disease cholesteatoma earlier.

Complications

Complications of Cholesteatoma

  • Conductive hearing loss can occur when sound is not transmitted normally through the middle ear.
  • Damage to the tiny middle-ear bones can worsen hearing loss.
  • Balance problems may develop if disease affects the inner ear or nearby balance structures.
  • Facial nerve weakness can occur if the disease affects the facial nerve.
  • Recurrent infection may cause ongoing drainage and inflammation.
  • Rarely, infection can spread to the skull or brain and become life-threatening.

Diagnosis

How Cholesteatoma Is Diagnosed

An ear, nose, and throat clinician examines the ear canal and eardrum with an otoscope or microscope. They look for trapped skin, drainage, a retracted eardrum, or a perforation that could indicate cholesteatoma.

  • Hearing tests (audiometry) measure the type and degree of hearing loss.
  • Tympanometry may assess eardrum movement and pressure in the middle ear.
  • CT or MRI may be used when the disease extent, complications, or surgical anatomy needs clarification.

Treatment & Management

Treatment and Management

Clinicians may clean the ear and treat an active infection or drainage with appropriate medicines. However, medicines alone usually cannot remove the trapped skin-cell collection. Because a cholesteatoma can keep growing and damage nearby structures, assessment by an ENT specialist is important.

Surgery for Cholesteatoma

Cholesteatoma surgery may include tympanoplasty, tympanomastoidectomy, or another approach suited to the location and extent of disease. The goals are to remove the cholesteatoma, protect nearby structures, and repair the eardrum when needed. Before surgery, hearing is assessed and the clinician discusses expected results and possible risks. Recovery may involve keeping the ear dry, protecting it from pressure or injury, and attending follow-up visits. Some people need a staged procedure, hearing rehabilitation, or additional support if hearing does not fully recover. Regular examinations remain important because cholesteatomas can recur.

Prevention

Can a Cholesteatoma Be Prevented?

  • Seek care for persistent ear drainage or repeated ear infections.
  • Follow treatment for Eustachian tube dysfunction or other middle-ear problems.
  • Keep scheduled ENT follow-up appointments, especially after treatment or surgery.
  • Avoid inserting cotton swabs or other objects into the ear.

There is no guaranteed way to prevent every cholesteatoma, particularly congenital cases and those related to structural problems. Routine screening is not recommended for people who have no symptoms or risk factors. Managing chronic ear disease and attending follow-up can support earlier detection.

Outlook and Prognosis

Outlook and Prognosis

Outcomes are generally better when a cholesteatoma is found and removed before it damages the hearing bones, balance organs, or facial nerve. Treatment can control the disease, but hearing may not return fully if permanent damage has already occurred.

After early treatment

When treatment occurs before major damage, there may be a good chance of disease control and preservation or improvement of hearing. Follow-up is still needed to check healing and watch for recurrence.

With advanced or recurrent disease

Extensive or recurrent cholesteatomas may require additional surgery, hearing support, and longer-term monitoring. Damage to nearby structures can make treatment and hearing recovery more complex.

Scheduled ENT examinations and hearing tests remain important even after symptoms improve or cholesteatoma surgery is completed. Ongoing surveillance helps identify recurrent cholesteatomas before they cause further damage.

When Should You See a Doctor

When Should You See a Doctor?

Arrange an appointment with a primary care clinician or ENT specialist for persistent or foul-smelling ear drainage, worsening hearing, repeated ear infections, ear pain, a visible white mass, or unexplained dizziness. These cholesteatoma symptoms should not be diagnosed or treated by trying to remove material from the ear yourself.

Seek urgent care

Do not wait with serious warning signs

These symptoms may indicate infection or involvement of nearby structures and need urgent assessment:

  • Sudden facial weakness
  • Severe vertigo
  • Severe headache
  • Swelling or redness behind the ear
  • High fever
  • Confusion
  • Rapidly worsening symptoms