MR imaging reveals a peripherally enhancing multi-septated cystic lesion arising in the right side of the neck (5.5 cm in total length, and 2 x 1.5 cm in the AP and transverse dimensions), with homogenous high signals on T2-weighted and low signal on T1 weighted images. The lesion lies deep to the sternocleidomastoid muscles and anterior to the carotid sheaths. No additional enhancing lesions were noted.