MRM is of 2 types : 1) E and E Or Canal Wall Up : a) Cortical mastoidectomy b) Posterior tympanotomy c) Combined approached Tympanoplasty
2) E, E , E or canal wall down : Modified Radical Mastoidectomy b) Radical Mastoidectomy c) Atticotomy
mcq : First step of mastoidectomy ? Answer : Finding the mastoid antrum . The surface landmark of mastoid antrum : Mc. Evan's Triangle or Suprameatal triangle
Q. What is Corner's septum ? Answer :It is petrosquamous suture , seen in some people , leads to difficulty in finding the antrum
2) E, E , E or canal wall down : Modified Radical Mastoidectomy b) Radical Mastoidectomy c) Atticotomy
mcq : First step of mastoidectomy ? Answer : Finding the mastoid antrum . The surface landmark of mastoid antrum : Mc. Evan's Triangle or Suprameatal triangle
Q. What is Corner's septum ? Answer :It is petrosquamous suture , seen in some people , leads to difficulty in finding the antrum
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