Intraosseous Synovial Cyst In The Olecranon Secondary To Rheumatoid Arthritis

Intraosseous synovial cyst which develops secondary to rheumatoid arthritis (RA) is a rare condition. We report the case of a patient with RA in whom a synovial cyst was localized in the olecranon. A 72-year-old male patient who has been diagnosed of RA was admitted with the complaint of pain and swelling on his left elbow and an insensibility in the left hand. Posteroanterior and lateral radiographs and magnetic resonance imaging were used for the definition of the pathology. When we evaluated the radiological findings we concluted of intraosseous synovial cyst. '' Intraosseous synovial cyst '' should be considered in differential diagnosis of an epiphyseal well-marginated lucent bone lesions.