Anticoantral csom

Characterized By;
 Persistent discharge
 Deafness
 Marginal perforation
 Cholesteatoma

CHOLESTEATOMA
 Definition:
 Epidermal & connective tissue structure
 In the form of sac
 Progressive & independent growth at the
expense of underlying bone
 Tendency to recur

“Medial wall of middle ear”

ETIOLOGY
 Congenital
 Acquired
 Theories
 Congenital cell rests
 Metaplasia of middle ear epithelium
 Papillary ingrowth
 Invagination of epithelium

Spread of cholesteatoma
 Mechanism of spread
 Pressure theory
 Enzyme theory
 Hormone theory

ROUTES OF SPREAD
 Direct spread
 Through congenital dehiscence
 Through surgical dehiscence
 Through normal sutures

HISTOPATHOLOGY
 Cyst like structure
 Capsule stratified squamous epithelium
 Centre keratin squames

DIAGNOSIS
 History
 Persistent ear discharge
 Purulent, stained with blood
 Foul smelling

 Associated conditions
 Post auricular involvement
 Facial nerve paralysis
 Nystagmus
 Vertigo
 Headache

EXAMINATION
 Examination
 Ear examination
 Blood stained
 Foul smell
 Purulent + C/S
 Post-auricular abscess
 Facial nerve paralysis
 Nystagmus
 Fistula sign +ve
 Audiological assessment

EXAMINATION UNDER
MICROSCOPE
 Children under G/A
 After Suction cleaning
 Marginal perforation
 Granulation tissue/polyp
 Whitish flakes in middle ear cavity

Radiological Assessment
 X-ray mastoid

CT-SCAN
 CT scan temporal bone
 Cholesteatoma
 Extent
 Normal anatomical structures
 Bony erosion
 Complications

TREATMENT
 Medical treatment
 No medical treatment for cholesteatoma
 Only for associated conditions
 Preparation for G/A

SURGICAL TREATMENT
 Aims of surgery
 Eradicate disease
 Prevent recurrence of infection
 Prevent complications
 Restore function

ROUTES OF
SURGERY
 Transcanal
 Endaural
 Post-aural
 Circumferential

PROCEDURES
 Canal wall-up
 Cortical mastoidectomy
 Combined approach mastoidectomy
 Canal wall-down
 Atticotomy
 Radical mastoidectomy
 Modified radical mastoidectomy

FUNCTIONAL
RECONSTRUCTION
 Tympanoplasty
 Type I (myringoplasty)
 Type II
 Type III
 Type IV
 Type V

COMPLICATIONS OF CSOM

Routs of spread

EXTRACRANIAL
COMPLICATIONS
 Facial nerve palsy
 Labyrinthitis
 Acute mastoiditis
 Post-auricular fistula
 Petrositis

INTRACRANIAL
COMPLICATIONS
 Extradural abscess
 Subdural abscess
 Lateral sinus thrombophlebitis
 Meningitis
 Brain abscess
 Otitic hydrocephalus

Anticoantral csom

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Anticoantral csom