endaural incision

end·au·ral in·ci·sion

incision through the external auditory canal, avoiding cartilage, to permit mastoid surgery.
References in periodicals archive ?
For the cartilage group, the cartilage was harvested from the conchal bowl in those who had a postaural incision and from the tragus in those who had an endaural incision.
A transmeatal incision was made in all but two patients, whose narrow canal required an endaural incision.