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Synchronization of Synovial Chondromatosis and Mycobacterium intracellurae Infection in Olecranon Bursitis: A Case Report
Clin Should Elbow 2019;22:46-49
Published online March 1, 2019;  https://doi.org/10.5397/cise.2019.22.1.46
© 2019 Korean Shoulder and Elbow Society.

Dong Hyun Kim, Seunggi Min, Hyun Joo Lee, Hee-June Kim, Hoseok Lee1, Jong Pil Yoon

Departments of Orthopaedic Surgery and 1Radiology, Kyungpook National University School of Medicine, Daegu, Korea
Correspondence to: Jong Pil Yoon
Department of Orthopaedic Surgery, Kyungpook National University School of Medicine, 130 Dongdeok-ro, Jung-gu, Daegu 41944, Korea
Tel: +82-53-420-5628, Fax: +82-53-422-6605, E-mail: jpyoon@knu.ac.kr, ORCID: https://orcid.org/0000-0001-6446-6254
IRB approval: Kyungpook National University Hospital (No. KNUH 2018-06-030).
Received July 9, 2018; Revised September 30, 2018; Accepted October 1, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
A 73-year-old woman presented with a recurrent cystic mass around her left olecranon. She had a history of 8 steroid injections due to
elbow pain beginning 3 years ago and twice had undergone aspiration of olecranon bursitis that developed two months prior to presentation. She had been taking medications for hypertension and diabetes with no pertinent past history. On magnetic resonance imaging (MRI), there were multiple nodules in the olecranon bursa, which were isointense to muscle on T1-weighted images and hyperintense to muscle on T2-weighted images. Our initial diagnosis was synovial chondromatosis. On bursoscopy, masses of gray-white colored nodules were observed in the bursa. Finally, synovial chondromatosis and non-tuberculous mycobacterial infection were concurrently diagnosed. In conclusion, uncalcified synovial chondromatosis and rice bodies can have similar visual and MRI characteristics; therefore, we suggest that clinicians should be aware of the possibility of other infections in cases of this type.
Keywords : Synovitis; Synovial chondromatosis; Tuberculosis; Nontuberculous Mycobacterium