Multiple myeloma - the cellular tumour, described a pathological proliferation of cells of a final stage differentiations (plasmocyte). It makes 10 % from all hematological tumours, an annual case rate 35 on 100.000 person.

Pathogenesis. The ionizing radiation enlarges frequency of a case rate. The immunoglobulins making the majority of globulins, are developed by plasmocytes after their antigenic stimulation. In rising synthesis of immunoglobulins can result both good-quality, and malignant diseases. Chronic antigenic stimulation of lymphocytes, and also the functional immune disturbances leading raised synthesis of polyclonal immunoglobulins concern to the good-quality reasons of a hypergammaglobulinemia.