Presentation
Left side conductive hearing loss
Patient Data
A well corticated osseous body is seen at the outermost part of the left external auditory canal attached to its roof with a bone pedicle (best seen on coronal). It is almost obstructing the canal with surrounding soft tissue thickening.
Normal CT features of the left middle ear, rest of external auditory canal and inner ear.
Case Discussion
Features are consistent with pedunculated external auditory canal osteoma with surrounding soft tissue thickening suggestive of associated otitis externa.
Differential diagnosis is external auditory canal exostosis (surfer's ears), which are broad-based bone elevations, usually multiple and bilaterally symmetric, involving the bony walls of the external auditory canals.
Unable to process the form. Check for errors and try again.