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
Earliest symptom of glomus tumour is 
Select and explain. 
A. Pulsatile tinnitus, B. Deafness, C. Headache, D. Veigo
A: Pulsatile tinnitus
Answer: A: Pulsatile tinnitus 
Explanation: The earliest symptoms are hearing loss and tinnitus. The earliest symptom of a glomus tumour is pulsatile tinnitus which is of swishing character and synchronous with pulse. Ref: Dhingra 7th edition pg. 121