Radical mastoidectomy is done for:
(c) Atticoantral cholesteatoma(Ref. Cummings, 6th ed., 2190)These days MRM is preferred over radical mastoidectomy in the management of unsafe CSOM with or without complications except for a few areas
ASOM
Safe CSOM
Atticoantral cholesteatoma
Acute mastoiditis
Operative Surgery