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a) HB 856 Rt 560 1x: This is an 80-year-old man who had bilateral mixed hearing loss and vertigo episodes. Histopathologic exam of his right ear showed otosclerosis that involves the otic capsule and endolymhatic hydrops in the basal turn of the cochlea (arrow), saccule (S) and utricle (U), b) HB 856 Rt 560 4x: A higher magnification of the basal turn of the cochlea showed clearly otosclerotic involvement of the otic capsule (arrow) and stria vascularis atrophy (*).
