There is a multiloculated cyst noted arising from the lateral aspect of the elbow with the following details:
- It measures 5.6 x 2.7 x 1.5 cm and is well defined and appears isointense on T1 and heterogeneously hyperintense on T2.
- It involves the extensor digitorum muscle/tendon, extensor carpi ulnaris muscle and the deep bundle of radial collateral ligament.
- It communicates with the radiocapitellar joint space.
- Subtle periosteal reaction noted over the lateral epicondyle.
- Small volume joint effusion noted.