IgD multiple myeloma. Review of 133 cases
Z. Jancelewicz
Abstract
Z. Jancelewicz
Abstract
One hundred thirty-three patients had IgD myeloma. The IgD comprises 0.8% of M-components in general and 2.1% of myelomas in particular. Males predominate and 65% of the patients are younger than 60 years at the diagnosis. More than half of the patients have lymphadenopathy, hepatomegaly, or splenomegaly. Extraosseous spread and amyloidosis are frequent. Severe anemia and azotemia are common. Total serum protein and IgD M-component levels are usually not high. λ-Type light chains are found in 90% of IgD M-components. Bence Jones proteinemia is frequent and Bence Jones proteinuria appears in almost all patients. Mean survival is 13.7 months from diagnosis. The IgD is different from IgG and IgA myeloma, indicating that the clinical picture and course of multiple myeloma may be related to the class and type of M-component.
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One hundred thirty-three patients had IgD myeloma. The IgD comprises 0.8% of M-components in general and 2.1% of myelomas in particular. Males predominate and 65% of the patients are younger than 60 years at the diagnosis. More than half of the patients have lymphadenopathy, hepatomegaly, or splenomegaly. Extraosseous spread and amyloidosis are frequent. Severe anemia and azotemia are common. Total serum protein and IgD M-component levels are usually not high. λ-Type light chains are found in 90% of IgD M-components. Bence Jones proteinemia is frequent and Bence Jones proteinuria appears in almost all patients. Mean survival is 13.7 months from diagnosis. The IgD is different from IgG and IgA myeloma, indicating that the clinical picture and course of multiple myeloma may be related to the class and type of M-component.
Key concepts: Immunoglobulin D, Bence Jones protein, Multiple myeloma, Azotemia, Medicine, Amyloidosis, Immunology, Immunoglobulin light chain