This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
[{'content': 'Which of the following presents as a mass in ear, which bleeds heavily on touch? \nSelect and explain. \nA. Glomus Jugulare tumor, B. Ca mastoid, C. Acoustic neuroma, D. Angiofibroma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Glomus Jugulare is a slow growing highly vascular lesion which arise in the jugular fossa from paraganglia located within the adventitia of jugular bulb. Examination of the ear shows a deep mass behind the eardrum. Patients usually presents with hoarseness, dysphagia and tinnitus. CT shows an irregularly marginated, intensely enhancing destructive lesion centered in the jugular fossa. MRI shows a salt and pepper appearance which is diagnostic for paraganglioma.', 'role': 'assistant'}]