Opera-Glass Hand in a Patient With Rheumatoid Arthritis.

An 80-year-old woman presented with polyarticular tenderness and swelling that had begun 40 years earlier and been diagnosed as rheumatoid arthritis (RA) and exclusively diagnosed psoriatic arthritis and arthritis induced by other rheumatic diseases. Because of intolerance to chemical disease-modifying antirheumatic drugs (cDMARDs) including methotrexate, leflunomide, and hydroxychloroquine, and so on, she had been treated with low dose of corticosteroids and nonsteroidal anti-inflammatory drugs and then etanercept since 2007 until now.