Reason: evaluate soft tissue mass of L distal fibula History: new onset nonpainful mass, L distal fibula. History of PVNS of R foot The flexor and extensor tendons appear intact. The peroneal tendons appear intact. The Achilles tendon is normal in appearance. Skin markers overlie the medial and lateral aspect of the ankle. There is soft tissue prominence along the lateral aspect of the distal fibula. No focal mass lesion is identified. No enhancing mass lesions are seen. These findings may represent a lipoma, which is difficult to accurately measure due to lack of inherent contrast with surrounding subcutaneous fat. Note is made of a focus of bone marrow abnormality within the anterior aspect of the talar dome which is likely degenerative in etiology. Otherwise no bone marrow signal abnormality is identified. No osteochondral defects are seen. The lateral collateral ligament complex appears intact. The distal tibiofibular syndesmotic complex appears intact. The imaged components of the deltoid ligament appear intact. There is a small amount of fluid within the tibiotalar and subtalar joints without evidence of a large effusion.
Soft tissue prominence about the ankle without a focal enhancing mass lesion. These findings likely represent a lipoma.