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What is Ca-wheel appearance of tympanic membrane in ASOM is due to and explain in detail?
In the stage of presuppuration of ASOM, there is congestion of pars tensa. A leash of blood vessels appears along the handle of malleus and at the periphery of tympanic membrane impaing it a ca-wheel appearance. (Ref: Textbook of diseases of ENT, Dhingra 7th edition; pg no 67)