Abstract
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Lymphoplasmacytic Lymphoma with IgA Paraprotein: a Case Report and Literature Review
by Yingying Sun, Liyan Li, Fengjuan Jiang, Hui Liu, Shan Gao, Honglei Wang, Yue Ren, Jia Song, Huaquan Wang, Zonghong Shao, Rong Fu, Lijuan Li
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Background: Lymphoplasmacytic Lymphoma (LPL) with immunoglobulin (Ig)A paraprotein is rare. When plasma cells dominate, the diagnosis becomes more challenging.
Methods: We reported a case of a 71-year-old male with elevated creatinine, splenomegaly, monoclonal IgA, and MYD88 mutation. Only monoclonal plasma cells were detected first, leading to a misdiagnosis of multiple myeloma. When progressive spleen enlargement was observed, re-evaluation revealed the emergence of monoclonal lymphocytes and the diagnosis was revised to LPL.
Results: The addition of rituximab to DVD regimen led to a partial response.
Conclusions: For cases where an initial definitive diagnosis cannot be established, close follow-up is required for timely diagnosis revision and therapeutic adjustment.
DOI: 10.7754/Clin.Lab.2025.250425
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