Lyre sign in seen in: (A) Grave's disease, (B) Meniere's disease, (C) Lateral sinus thrombosis, (D) Carotid body tumour
Answer is D. Lyre sign is an angiographic finding seen in carotid body tumour of the neck. There is splaying apa of internal and external carotid aeries on angiogram. Ref: Diseases of Ear, Nose and Throat by P.L. Dhingra, 9th edition, p460.