Abstract：
BACKGROUND:Anti-CADM-140 antibody (anti-CADM-140), also referred to as anti-melanoma differentiation-associated gene 5 (MDA5) antibody, is a myositis-specific antibody identified in the sera of patients with clinically amyopathic dermatomyositis (C-ADM) and is associated with a worse prognosis in dermatomyositis-associated interstitial lung disease (DM-ILD). We sought to determine high-resolution computed tomography (HRCT) features of DM-ILD with anti-CADM-140. METHODS:Twenty-five patients newly diagnosed with DM-ILD at Kyoto University Hospital between 2005 and 2009 were retrospectively reviewed. Serum anti-CADM-140 was measured in all patients at their first visit. Chest HRCT images taken prior to treatment were classified based on the dominant findings and their distribution, and compared between patients with and without the antibody. RESULTS:Of 25 DM-ILD patients, 12 were positive and 13 were negative for anti-CADM-140. HRCT patterns differed significantly between anti-CADM-140-positive and negative patients (P = 0.002). Lower consolidation or ground-glass attenuation (GGA) pattern (50.0%) and random GGA pattern (33.3%) were the predominant patterns in anti-CADM-140-positive cases, while lower reticulation pattern (69.2%) was frequently seen in anti-CADM-140-negative cases. Anti-CADM-140-positive cases were also significantly characterized by the absence of intralobular reticular opacities (0% in anti-CADM-140 (+) vs. 84.6% in anti-CADM-140 (-), P < 0.0001). CONCLUSIONS:Anti-CADM-140-positive DM-ILD was characterized by lower consolidation or GGA pattern, random GGA pattern, and the absence of intralobular reticular opacities.
journal_name
Respir Medjournal_title
Respiratory medicineauthors
Tanizawa K,Handa T,Nakashima R,Kubo T,Hosono Y,Watanabe K,Aihara K,Oga T,Chin K,Nagai S,Mimori T,Mishima Mdoi
10.1016/j.rmed.2011.05.006subject
Has Abstractpub_date
2011-09-01 00:00:00pages
1380-7issue
9eissn
0954-6111issn
1532-3064pii
S0954-6111(11)00169-7journal_volume
105pub_type
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