CT OF THE TEMPORAL BONE IN THE CHARGE ASSOCIATION

We reviewed the CT examinations of the temporal bone, performed with l -mm-thick contiguous sections, of seven patients with the CHARGE assoc iation. We found abnormalities of the incus and stapes, with ossicular chain fixation, absence of the stapedius muscle and oval window, hypo plasia or dysplasia of the vestibule and absence of the semicircular c anals in all ears. The pyramidal eminence and tympanic sinus were abse nt and there were anomalies of the cochlea in 13 of 14 ears. Absence o f the semicircular canals is the most specific change in patients with the CHARGE association.