<prompt> A -30-yead old male is having Attic cholesteatoma of left ear with lateral sinus thromboplebitis. Which of the following will be the operation of choice?Intact canal will be the operation of choiceSimple mastoidectomy with TympanoplastyCanal wall down mastoidectomyMastodidectomy with cavity obliteration  <response>: In Attic cholesteatoma, if it invades eustachian tube or perilabyrynthine tissue, then management is Radial Mastoidectomy. 