Ca-wheel appearance of tympanic membrane in ASOM is due to
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)
Perforation of tympanic membrane
Edema of tympanic membrane
Congested blood vessels along malleus
Granulation tissue on tympanic membrane
Ear