Multiple extra-articular synovial cysts complicated with rheumatoid arthritis

Vol.19 No.5

Case Report

Multiple extra-articular synovial cysts complicated with rheumatoid arthritis

Authors

Yohei Kirino¹ , Atsushi Ihata¹ , Kazuya Shizukuishi² , Maasa Hama¹ , Kaoru Takase^1,3 , Akiko Suda¹ , Atsuhisa Ueda¹ , Shigeru Ohno³ , Mitsuhiro Takeno¹ , Yoshiaki Ishigatsubo¹

Department of Internal Medicine and Clinical Immunology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama Kanagawa, 236-0004, Japan
Department of Radiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
Yokohama City University Medical Center, Center for Rheumatic Diseases, Yokohama, Japan

Received:

23 January 2009

Accepted:

18 May 2009

Published online:

13 June 2009

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Abstract

Multiple extra-articular synovial cysts (MESC) are rarely complicated with various rheumatic diseases. We here first report a rheumatoid arthritis (RA) patient with MESC, which were extensively analyzed by a series of imaging techniques including fluorine-18-2-fluoro-d-glucose positron emission tomography (18F-FDG-PET), magnetic resonance imaging (MRI), and ultrasonography. FDG uptakes in joint lesions with MESC were much higher than those reported in typical lesions of RA, suggesting that marked joint inflammation is implicated in the development of MESC.

Key words

Rheumatoid arthritis - Multiple extra-articular synovial cysts - 18F-FDG-PET - MRI - Ultrasonography