Complication of suppurative otitis media

Complication of suppurative otitis media :-

Whether the preceding disease has acute or chronic spread of infection can fallow a number of routes .
1-Extension via bone that has been demineralized during acute infection , resorption by cholesteatoma or osteitis in chronic destructive disease .
2-Infected clot within small veins .
3-Oval or round windows.
4-Fracture temporal bone .
5-After stapedectomy .
6-Via periarteriolar spaces to the white matter of brain .
The development of the complication depend on
1-Patients factors--- age,immunity ( DM , Leukaemia).
2-bacterial factors ---- type and virulence of M.O .
3-Tretmeant efficacy of the underlying middle ear disease .
Classification of the CSOM complication
Intracranial 1-Extra Dural abscess .
2-subdural abscess .
3- Sigmoid sinus thrombophlebitis.
4-Meningitis .
5-Brain abscess .
6-Otitic hydrocephalus .
Complications within the temporal bone :
1-Mastoiditis .
2-Petrositis .
3-Facial paralysis .
4-Labyrinthine infections .
Managements of the intracranial complication of CSOM :-eThe presentation , Diagnosis and treatment of intracranial complication are common to all .