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a Axial HRCT image of the right temporal bone in an adult patient with progressive right-sided CHL and remote history of ipsilateral head injury. A hypodense demineralised otosclerotic plaque (arrow) is noted in the fissula ante fenestram. b Axial HRCT image of the same patient as (a) at a slightly higher level. There is also evidence of malleo-incudal dislocation (arrow)
