Chronic suppurative otitis media
chronic suppurative otitis media tympanic membrane perforation
This clinical otoscopic photograph of a left ear demonstrates signs of chronic otitis media (COM). The image clearly shows a large, central perforation of the tympanic membrane, appearing as a dark, circular void where the membrane should be intact. Adjacent to this perforation, there is visible mucoid discharge, which presents as a translucent, glistening, and somewhat viscous fluid resting on the membrane surface. Additionally, white, opaque areas consistent with tympanosclerotic plaques are visible on the remaining portions of the tympanic membrane, indicating previous inflammation or scarring. The external auditory canal appears mildly erythematous. This visual is characteristic of chronic suppurative otitis media, an important educational example for distinguishing types of membrane perforations and associated middle ear pathology. The presence of discharge and structural changes in the membrane are key diagnostic markers used by otorhinolaryngologists to assess disease chronicity and planning for potential tympanoplasty.
This endoscopic clinical photograph depicts the right tympanic membrane and middle ear cavity, demonstrating hallmark features of Chronic Suppurative Otitis Media (CSOM). A large subtotal perforation is visible, through which the structures of the middle ear are exposed. The middle ear mucosa appears erythematous and thickened, indicative of chronic inflammation. There is evidence of mucoid drainage, presenting as a viscous, translucent fluid within the cavity. Crucially, the long process of the incus shows significant erosion, a common sequela of long-standing inflammatory processes in the middle ear. The remaining tympanic membrane remnants appear thickened and opaque. This image serves as a classic educational example of middle ear pathology and the destructive potential of chronic infectious processes on the ossicular chain.
This clinical photograph, captured via otoendoscopy, displays a preoperative view of a human tympanic membrane (eardrum) with a significant central perforation. The perforation is characterized by a well-defined, dark circular void, revealing the underlying middle ear space. The remaining tympanic membrane tissue exhibits marked erythema and increased vascularity, particularly evident in the posterior-superior quadrant, indicating active inflammation or chronic myringitis. The mucosal surface appears thickened and irregular in texture, losing its normal pearly-gray translucency. This image serves as a clinical representation of chronic suppurative otitis media or traumatic perforation, demonstrating the typical morphological changes that necessitate surgical intervention, such as tympanoplasty. The visual highlights key diagnostic features including the size and location of the defect and the health of the surrounding residual membrane, which are critical for surgical planning in otolaryngology.
This clinical photograph shows an otoscopic view of the right ear, demonstrating a large, subtotal perforation of the tympanic membrane located primarily in the posterior and inferior quadrants. The perforation is patent, revealing the underlying middle ear space, which appears dark and recessed. The remaining tympanic membrane tissue is erythematous and thickened, suggesting chronic inflammation, with a loss of the normal translucent, pearly-gray appearance and light reflex. The handle of the malleus is visible but obscured by the retracted and inflamed tissue. The external auditory canal appears relatively normal without signs of stenosis or active otorrhea at the time of imaging. This presentation is characteristic of chronic suppurative otitis media (CSOM), a condition defined by persistent tympanic membrane perforation and a history of intermittent or continuous discharge.
"chronic suppurative otitis media" management treatment
Chronic Suppurative Otitis Media (CSOM)
Definition
Classification
| Feature | Tubotympanic (Safe) | Atticoantral (Unsafe) |
|---|---|---|
| TM perforation | Central (pars tensa) | Marginal / attic (pars flaccida) |
| Cholesteatoma | Absent | Present (common) |
| Discharge | Mucoid, non-offensive | Scanty, foul-smelling |
| Bone erosion | Rare | Frequent |
| Complications | Less common | Common, serious |
- The tubotympanic type shows retraction of the TM confined to the pars tensa
- The atticoantral type involves pars flaccida retraction and cholesteatoma is commonly present
Epidemiology & Risk Factors
- Most common in low socioeconomic settings with limited healthcare access
- Peak age: children under 2 years old
- Risk factors include:
- Multiple prior episodes of acute otitis media (AOM)
- AOM in the first months of life
- Chronic secretory otitis media
- Eustachian tube (ET) dysfunction
- Genetic predisposition (higher incidence in Inuit, Native Americans, Aboriginal Australians/New Zealanders)
- Nasopharyngeal reflux
Pathophysiology
- ET dysfunction → decreased middle ear aeration → nitrogen absorption by mastoid cells → negative middle ear pressure
- Negative pressure → TM retraction (pars flaccida most susceptible) → effusion (serous or purulent) → mucosal oedema
- Bacterial infection → purulent effusion → inflammatory mediators → chronic mucosal changes, submucosal gland metaplasia (secretory mucosa perpetuates effusion)
- Granulation tissue forms as bacterial toxins disrupt the basement membrane; inflammatory cells extrude, fibroblasts and angiogenic factors are recruited → polyp formation
- TM weakening - enzymes in granulation tissue and effusion break down the collagen skeleton of the TM; combined with negative pressure → retraction pockets deepen → contact with underlying mucosa → perforation
- Cholesteatoma genesis - deep retraction pockets and perforations allow keratinizing squamous epithelium to invade the middle ear, leading to cholesteatoma
Microbiology
| Organism | % of cultures |
|---|---|
| Pseudomonas aeruginosa | 31.1% |
| Staphylococcus aureus | 19.1% |
| Proteus mirabilis | 7.7% |
| Escherichia coli | 1.4% |
| Klebsiella pneumoniae | 1.0% |
| Peptococcus (anaerobe) | 12.4% |
| Bacteroides sp. (anaerobe) | 12.4% |
| Peptostreptococcus (anaerobe) | 4.8% |
Clinical Features
- Intermittent or continuous otorrhoea (sometimes foul-smelling with anaerobes)
- Conductive hearing loss (the most common functional deficit)
- Otalgia and headache are uncommon - their presence should raise suspicion for intracranial involvement or malignancy
- Vertigo should raise suspicion for labyrinthitis or labyrinthine fistula
- Otoscopy/otomicroscopy: TM perforation, retraction pockets, atelectasis; otorrhoea may obscure the TM
- Inspect for: scutal erosion, ossicular erosion, granulation tissue, aural polyps
- An aural polyp should be considered cholesteatoma until proven otherwise
- White keratin debris in the attic region = cholesteatoma (primary acquired type - see below)
Otoscopic Images
Cholesteatoma
- Congenital (rare, present behind intact TM in young children)
- Primary acquired - keratinizing epithelium migrates through a pars flaccida retraction pocket
- Secondary acquired - epithelium migrates through a pre-existing TM perforation
Diagnosis
- Otomicroscopy with pneumatic insufflation - identifies retraction pockets, mobility, cholesteatoma
- Audiometry - conductive hearing loss is typical (low frequency); mixed hearing loss if sensorineural damage has occurred. A conductive loss >30 dB suggests ossicular erosion
- High-resolution CT temporal bones - indicated for surgical planning, complicated CSOM, and identified or suspected cholesteatoma
- MRI with contrast - for suspected intracranial complications
- Biopsy of granulation tissue unresponsive to topical therapy - to exclude malignancy (squamous carcinoma of temporal bone is associated with long-standing CSOM)
- Ear swab for culture - guides antibiotic selection
Management
Primary Goal
Medical Treatment
- Ciprofloxacin ear drops - the most evidence-supported agent; fluoroquinolones are preferred because they are non-ototoxic and active against Pseudomonas
- A 4-6 week course following debridement
- 2025 Cochrane evidence: Three Cochrane meta-analyses published June 2025 confirm topical antibiotics are more effective than systemic antibiotics or topical antiseptics for CSOM. Topical antiseptics (acetic acid, Burow's solution) remain an alternative.
- Biofilms are frequently resistant; high concentrations from topical delivery partially overcome this
Indications for Surgery
- Cholesteatoma combined with medically refractory CSOM = near-absolute indication
- Failure of multiple courses of medical treatment
- Symptoms suspicious of complications: vertigo, facial weakness, headache
- Deep retraction pockets threatening ossicular chain
- Persistent conductive hearing loss
Surgical Options
| Procedure | Description | Indication |
|---|---|---|
| Myringoplasty | TM repair alone (patch graft) | Simple perforation, no middle ear/mastoid disease |
| Tympanoplasty | TM repair ± ossicular chain reconstruction | Perforation with ossicular involvement |
| Canal wall-up (CWU) mastoidectomy | Mastoid exenteration preserving posterior EAC wall | Limited cholesteatoma; patient preference for normal anatomy |
| Canal wall-down (CWD) mastoidectomy | Posterior EAC wall removed; open cavity created | Extensive cholesteatoma; revision surgery; unresectable matrix |
- CWD provides better surgical access and potentially lower recurrence, but results in an open cavity requiring lifelong routine follow-up and debridement
- CWU preserves normal anatomy and dramatically reduces post-op convalescence, but higher disease recurrence risk for cholesteatoma
- Anatomical position of cholesteatoma is a stronger predictor of recurrence than choice of technique
Complications
Intracranial Complications
- Meningitis
- Brain abscess (temporal lobe, cerebellar)
- Epidural/subdural abscess
- Sigmoid sinus thrombophlebitis
- Otitic hydrocephalus
Extracranial Complications
- Labyrinthine fistula (most commonly horizontal semicircular canal) - presents with vertigo and SNHL
- Facial nerve paralysis - acute (infection) or insidious (cholesteatoma expansion through fallopian canal)
- Coalescent mastoiditis / subperiosteal abscess
- Petrositis (Gradenigo syndrome: otorrhoea, ipsilateral abducens palsy, deep facial pain)
- Ossicular erosion (most commonly the long process of the incus) → conductive hearing loss
- Tegmen tympani/mastoideum erosion → CSF leak, brain herniation
Key Points Summary
- CSOM = TM perforation + chronic otorrhoea >6 weeks; tubotympanic (safe) vs atticoantral (unsafe/cholesteatoma)
- Core pathophysiology: ET dysfunction → negative middle ear pressure → TM retraction → perforation/cholesteatoma
- Most common pathogen: Pseudomonas aeruginosa; mixed aerobic/anaerobic flora
- Foul-smelling discharge = anaerobes/cholesteatoma; malodour is a red flag for the atticoantral type
- An aural polyp = cholesteatoma until proven otherwise
- Otalgia/headache/vertigo/facial weakness = possible complications; urgent evaluation needed
- Topical ciprofloxacin + aural toilet is first-line medical treatment (2025 Cochrane evidence confirms superiority over systemic antibiotics)
- Surgery (tympanoplasty ± mastoidectomy) is indicated for cholesteatoma, treatment failure, or complications
- Cholesteatoma is aggressive: erodes ossicles, otic capsule, fallopian canal, tegmen - treat surgically without delay
- Long-term surveillance is mandatory after CWD mastoidectomy
Middle ear disease salah mansour book
Salah Mansour "Middle Ear Disease" book otology
Available ENT Books in This Library
| Book | Publisher |
|---|---|
| Cummings Otolaryngology Head & Neck Surgery | Elsevier |
| KJ Lee's Essential Otolaryngology | McGraw-Hill |
| Scott-Brown's Otorhinolaryngology Head & Neck Surgery (Vol 1, 2, combined) | CRC Press |
| Shambaugh Surgery of the Ear | PMPH |
About Salah Mansour's Book
- Authors: Salah Mansour, Jacques Magnan, Karen Nicolas, Hassan Haidar
- Publisher: Springer (2018)
- eBook ISBN: 978-3-319-72962-6
- Hardcover ISBN: 978-3-319-72961-9
- Otosclerosis
- Acute Otitis Media and Acute Coalescent Mastoiditis
- Otitis Media with Effusion
- Chronic Suppurative Otitis Media (CSOM)
- Cholesteatoma
- And further chapters on tympanoplasty, ossiculoplasty, and related topics