这个词是什么意思？
An extremely rare condition manifested as monoclonal IMMUNOGLOBULIN M dysproteinemia without features of lymphoproliferative disease, but with chronic urticaria, fever of unknown origin, disabling bone pain, hyperostosis, and increased erythrocyte sedimentation rate.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D019873 · MeSH 2026。
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