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Chronic Suppurative OM - Coggle Diagram
Chronic Suppurative OM
Definition
Types (painless)
Tubotympanic (safe type)
site
start in Eustachian tube, mesotympanuim , hypotympanium
Nature
Simple musosal inflammation
Pathogenesis
Symptoms
Otoscopy
Investigations
Treatment
Attico-antral (unsafe type)
Site
Start in attic and mastoid antrum
Nature
Bone erosion
Pathogenesis
Symptoms
Otoscopy
Treatment
Investigations
Imp notes
How can the skin reach the middle ear in cholesteatoma?
Congenital
Acquired
Primary: attic retraction (invagination theory)
secondary: Migrational theory - Metaplastic theory
Pain in chronic OM indicate
Acute otitis media in top
Prersence of complication
Causes of pure purulent ottorhea
Necrotising OM
cholesteatoma
Causes of Muco-purulent ottorhea
Acute OM (after perforation)
Tubotympanic CSOM