Left ear:
microtia: grade 2 (Marx classification 1); some normal features are present but the upper ear is severely deficient
external auditory canal atresia: complete bony and fibrous obliteration of the expected course of the external auditory canal
middle ear/tympanic cavity is adequate/normal (measured more than 3 mm in the coronal view from promontory to atretic plate); no soft tissue opacification to suggest cholesteatoma
ossicles anomalies: mild dysplastic malleus with smaller manubrium of malleus; Foreshortened incus with fusion of short process to the posterior tympanic wall. Normal angulation of include-stapedial articulation; normal stapes seen attached at the oval window
mastoid pneumatisation: hyperpneumatised-aeration beyond the mastoid where pneumatisation seen at the petrous and squamous portions
facial nerve course: mastoid segment is foreshortened and anteriorly positioned; inferior bony dehisence of tympanic segment
oval and round windows: both are open and normal in diameter (more than 1mm); not stenotic or atretic
vascular anomalies: no aberrant internal carotid artery; no high riding jugular bulb
normal inner ear structures
Right ear:
-
normal except cerumen/ear wax at external auditory canal