FIG 2. A–E, Axial contrast-enhanced CT scans, from superior to inferior.

A, At level of parotid gland, cutaneous/subcutaneous tumor recurrence is indicated by enhancing mass (arrows). Note tumor is not extending into substance of parotid gland.

B, Image caudal to A shows bottom of main tumor (arrow). Posterior to parotid gland is a round soft-tissue structure not clearly present on the other side, representing the enlarged upper anterior branch of the great auricular nerve (arrowhead).

C, Image caudal to B shows GAN to be larger and clearly enhancing (arrowhead).

D, Image caudal to C shows GAN along the lateral aspect of the sternocleidomastoid muscle (arrowhead).

E, Image caudal to D shows GAN barely separable from lateral posterior aspect of sternocleidomastoid muscle (arrowhead). Below this level, the nerve could not be seen.