RT Journal Article SR Electronic T1 Bone edema determined by magnetic resonance imaging reflects severe disease status in patients with early-stage rheumatoid arthritis. JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2154 OP 2157 VO 34 IS 11 A1 Mami Tamai A1 Atsushi Kawakami A1 Masataka Uetani A1 Shoichiro Takao A1 Fumiko Tanaka A1 Keita Fujikawa A1 Toshiyuki Aramaki A1 Hideki Nakamura A1 Nozomi Iwanaga A1 Yasumori Izumi A1 Kazuhiko Arima A1 Kouichiro Aratake A1 Makoto Kamachi A1 Mingguo Huang A1 Tomoki Origuchi A1 Hiroaki Ida A1 Kiyoshi Aoyagi A1 Katsumi Eguchi YR 2007 UL http://www.jrheum.org/content/34/11/2154.abstract AB OBJECTIVE: To determine the significance of bone edema, detected by magnetic resonance imaging (MRI), in early-stage rheumatoid arthritis (RA). METHODS: We simultaneously examined serologic variables, MRI of wrist sites and finger joints of both hands, clinical disease activity score (DAS), and HLA-DR typing at entry in 80 patients with early-stage RA. RESULTS: The number of bones scored as positive for bone edema correlated with the number of sites scored as positive for MRI synovitis and MRI bone erosion, rate of enhancement (E-rate), and serum C-reactive protein (CRP), matrix metalloproteinase 3 (MMP-3), and interleukin 6 (IL-6). Findings for MRI synovitis and MRI bone erosion, E-rate, CRP, MMP-3, IL-6, seropositivity, and titer of anti-cyclic citrullinated peptide antibody (anti-CCP antibody), DAS28-CRP and HLA-DRB1*0405 allele carriership, were significantly higher in the positive versus the negative bone edema group. CONCLUSION: Bone edema based on our scoring system may reflect severe disease status in patients with early-stage RA. However, its clinical value at entry in prognostication of RA should be examined through prospective clinical followup studies.