Retraction of tympanic membrane touching promontory. What is sade's grade?: (A) 1, (B) 2, (C) 3, (D) 4
Answer is C. Ans. is 'c' i.e., 3 Atelectic grades of pars tensa Sade classification:: Grade 1 = slight retraction of TM over the annulus Grade 2 = the TM touches the long process of the incus Grade 3 = the TM touches the promontory Grade 4 = the TM is adherent to the promontory