Retraction of tympanic membrane touching promontory. What is sade's grade?
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
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