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What is Cart Wheel sign is seen in - and explain in detail?
Otoscopy Signs for ASOM:

There is congestion of pars tensa
Leash of blood vessels appear along the handle of malleus and at the periphery giving it a cartwheel like appearance.
Transluscency is reduced.
Later tympanic membrane appears red and bulging with loss of landmarks.
Tympanic membrane is immobile n pneumatic ostoscopy