Abstract
Answer C. Impacted cerumen
Causes of conductive hearing loss can be in the external, middle and inner ear.
Common: Wax Uncommon: Foreign body, tumour, congenital atresia, otitis externa
Common: Acute/serous otitis media, tympanic membrane dysfunction, Eustachian tube dysfunction Uncommon: Otoscelerosis, cholesteatoma, tumour, temporal bone trauma
Severe otoscelerosis with obstruction of round or oval window Superior canal dehiscence syndrome
InnovAiT article: Deafness. DOI:10.1177/1755738017732364.