title: Two cases of otosclerosis in Kumasi, Ghana, case report.
abstract: The incidence of otosclerosis in relationship to race has been established in North America; however, there are no reliable data about its occurrence among negro Africans. Over a period of three years 650 consecutive cases of hearing loss excluding those with acute and chronic otitis media, Eustachian tube dysfunction, wax, foreign bodies, and traumatic perforations, were studied in Kumasi, Ghana. Only two cases of otosclerosis were detected. It is postulated that the rarity among people of the black race may be related to the flat occipital protuberance of the skull among African people.
mesh_terms: D000328:Adult; D044383:Black People; D005260:Female; D006314:Hearing Loss, Conductive; D006320:Hearing Tests; D006801:Humans; D008297:Male; D010040:Otosclerosis / Q000453:epidemiology* / Q000209:etiology; D012886:Skull / Q000033:anatomy & histology; D014012:Tinnitus