This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
Phelps sign is seen in 
Select and explain. 
A. Glomus jugulare, B. Vestibular Schwannoma, C. Menniers disease, D. Neurofibromatosis
A: Glomus jugulare
Answer: A: Glomus jugulare 
Explanation: Phelps sign is the loss of crust of bone between the carotid canal and jugular bulb in glomus jugulare as seen in CT scan. Ref: Dhingra 7th edition pg.122