Fig. 14From: An additional challenge for head and neck radiologists: anatomic variants posing a surgical risk – a pictorial reviewAnatomical variant of nerve course. Coronal CBCT reformation (a) showing dehiscence of the bony walls of the infraorbital canal (arrows) and minor protrusion of the nerve within the maxillary sinus; sagittal CBCT reformation (b) showing the nerve hanging in the maxillary sinus cavity (arrowheads), covered by intact nerve canal wallsBack to article page