Synovial based mass with lobulated margins around the right ankle involving both the anterior and posterior recesses of the ankle. The bulk of the mass is seen posteriorly.
Demonstrated are the following signal characteristics:
- T1WI: hypointense to muscle
- T2WI: hypointense to muscle
- GRE: susceptibility artifact (blooming)
- STIR and PD fat sat: heterogeneous but predominantly hyperintense
- T1 post contrast (gadolinium): homogeneous enhancement