This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (E.N.T.), Subject name: ENT
[{'content': "Paracusis Willisii is a symptom frequently present in \nSelect and explain. \nA. Advanced Meniere's disease, B. Otosclerosis, C. Acoustic neuroma, D. Circumscribed labyrinthitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) Otosclerosis # SYMPTOMS OF OTOSCLEROSIS:> Hearing loss This is the presenting symptom and usually starts in twenties. It is painless and progressive with insidious onset.> Often it is bilateral conductive type. Paracusiss willisii Tinnitus Vertigo Speech Chronic conductive hearing loss (CHL) is the finding in almost all cases of otosclerosis> This usually will begin in one ear but will eventually affect both ears with a variable course.> On audiometry, the hearing loss is characteristically low frequency, with higher frequencies being affected later> Sensorineural hearing loss has also been noted in patients with otosclerosisthis is usually a high frequency loss, and usually manifests late in the disease.', 'role': 'assistant'}]