Q. A 60-year-old woman complains of progressive hearing loss for the last 5 years without any previous trauma. She tells you that hearing loss tends to run in the family. You suspect otosclerosis. Which one of the following findings is most in favor of the diagnosis of otosclerosis? Destruction of external auditory canal. Air fluid level behind the eardrum. Clear otorrhea. Perforated eardrum. Normal eardrum.