A malignant neoplasm that is composed of plasma cells that exhibit monoclonality and are diffusely present in the bone marrow is referred to as:

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Multiple myeloma is a cancer of plasma cells, where the bone marrow produces too many abnormal plasma cells, which are monoclonal. This leads to anemia, bone pain, and increased risk of infections. Multiple sclerosis is a neurological disorder, while monoclonal immunoglobulinemia could occur with various types of monoclonal gammopathies, but it is a broader term that does not specifically refer to malignancy. Plasmacytoma is a localized, solitary mass of abnormal plasma cells, which may progress to multiple myeloma.

A Malignant Neoplasm That Is Composed of Plasma Cells That