Hemifacial Pain and Hemisensory Disturbance Referred from Occipital Neuralgia Caused by Pathological Vascular Contact of the Greater Occipital Nerve

Figure 2

Intraoperative photographs during the decompression of the greater occipital nerve. (a) An intraoperative photograph showing adhesions of the greater occipital nerve (white arrows) with the connective tissue (black arrow heads) and occipital arteries (black arrows). (b) An intraoperative photograph after decompression of the left greater occipital nerve. A reddish deformation is apparent in the compressed portion (white arrows) with pathological vascular contact compared to the normal proximal course (black arrow) of the greater occipital nerve.

(a)

(b)