Fig. 2
MR imaging shows a well-defined and lobulated mass on the left neck. a On T1-weighted images, the mass has heterogeneity with high-signal intensity than muscle. b On T2-weighted images, the septum has low-signal intensity. c On T2-weighted fat-suppressed images, the signal of the mass is suppressed totally. d On T1-weighted images following gadolinium administration, the mass is enhanced