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Chronic Epitympanic Otitis Media Explained
Chronic epitympanic otitis media is a long-term inflammatory condition of the middle ear affecting the epitympanum. It often involves cholesteatoma formation and may require surgical treatment.
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Chronic epitympanic otitis media is a long-term inflammatory condition of the middle ear affecting the epitympanum. It often involves cholesteatoma formation and may require surgical treatment.
What is Chronic Epitympanic Otitis Media?
Chronic epitympanic otitis media is a persistent inflammatory disease of the middle ear that primarily affects the upper part of the tympanic cavity, known as the epitympanum (or attic). It is considered one of the more dangerous forms of chronic otitis media because it is frequently associated with the development of a cholesteatoma – a benign but locally destructive accumulation of squamous epithelium that can erode surrounding bone and ossicular structures.
Unlike the mucosal form (chronic mesotympanic otitis media), the epitympanic variant carries a higher risk of serious complications if left untreated.
Causes
The development of chronic epitympanic otitis media is typically multifactorial. Key contributing factors include:
- Chronic Eustachian tube dysfunction leading to impaired middle ear ventilation
- Recurrent acute otitis media in childhood
- Retraction of the tympanic membrane, particularly in the pars flaccida region, leading to retraction pocket formation and ultimately cholesteatoma
- Genetic predisposition influencing susceptibility to chronic ear infections
- Previous ear trauma or surgery
Symptoms
Symptoms of chronic epitympanic otitis media can develop gradually and may go unnoticed for extended periods. Common signs and symptoms include:
- Progressive hearing loss: usually conductive in nature, occasionally sensorineural
- Ear discharge (otorrhoea): often foul-smelling, either intermittent or persistent
- Sensation of pressure or pain in the ear
- Tinnitus (ringing or buzzing in the ear)
- In advanced stages: dizziness or vertigo due to inner ear involvement
- In severe cases: symptoms of intracranial complication such as headache, fever, or neurological deficits
Diagnosis
Diagnosis is established through a combination of clinical examination and imaging studies:
- Otoscopy: Visual inspection of the ear canal and eardrum; typical findings include perforation or retraction in the upper portion of the tympanic membrane (pars flaccida)
- Ear microscopy: Detailed assessment using a surgical microscope
- Audiometry: Evaluation of the degree and type of hearing loss
- CT scan of the temporal bone: Imaging to assess bone erosion, cholesteatoma extent, and possible complications
- MRI of the temporal bone: Particularly useful for differentiating cholesteatoma from other soft tissue changes and for postoperative follow-up
Treatment
Treatment of chronic epitympanic otitis media is primarily surgical, since a cholesteatoma will continue to grow and cause damage without removal.
Surgical Options
- Tympanoplasty: Reconstructive surgery to restore middle ear function and repair the tympanic membrane
- Mastoidectomy: Removal of diseased tissue from the mastoid process to eradicate cholesteatoma
- Open technique (canal wall down / radical mastoidectomy): Used for extensive cholesteatoma; creates an open cavity for improved access and long-term control
- Closed technique (canal wall up): Preserves the posterior ear canal wall; often requires a planned second-look surgery to check for residual cholesteatoma
Conservative Adjunct Therapy
Topical or systemic antibiotics may be used to manage active infection, particularly prior to surgery. However, conservative treatment alone is insufficient when cholesteatoma is present.
Complications
Without appropriate treatment, chronic epitympanic otitis media can lead to serious complications, including:
- Destruction of the ossicular chain resulting in permanent hearing loss
- Labyrinthitis causing vertigo and sensorineural hearing loss
- Facial nerve palsy due to erosion of the facial nerve canal
- Meningitis, brain abscess, or other intracranial complications
References
- Probst R, Grevers G, Iro H: Basic Otorhinolaryngology – A Step-by-Step Learning Guide. Thieme, Stuttgart 2006.
- Bluestone CD, Klein JO: Otitis Media in Infants and Children. 4th edition. BC Decker, Hamilton 2007.
- Jackler RK, Driscoll CL: Tumors of the Ear and Temporal Bone. Lippincott Williams and Wilkins, Philadelphia 2000.
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