This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumors of Ear, Subject name: ENT
[{'content': 'All are true about Glomus jugulare tumours except: \nSelect and explain. \nA. Common in females, B. Causes conductive deafness, C. It is a disease of infancy, D. It invades labyrinth, petrous pyramid and mastoid', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (c) It is a disease of infancy(Ref. Scott Brown, 8th ed., Vol 2 page 1303)Glomus is seen most commonly in middle age (40 - 50 yrs) usually in females. It presents with conductive deafness and pulsatile tinnitus.It is a benign but locally invasive tumour and can invade mastoid, labyrinth, petrous pyramid, jugular foramen, Eustachian tube and middle/posterior cranial fossa.', 'role': 'assistant'}]