Lymphogranulomatosis - the primary tumoral disease, described a hyperplasia of an adenoid tissue with formation of lymphogranulomas. 2 age peaks of a case rate are characteristic: 15-30 years equally often at men and women; 50 years with a high case rate of men are more senior. The etiology of a lymphogranulomatosis as well as other hemoblastoses is not established. Appreciable rising of a case rate within the limits of the certain region, in the certain season, in young age group specifies that the etiological role can belong to viruses and factors of an environment. To contributing factors can be carried hereditary predisposition (family cases of disease by a lymphogranulomatosis and chronic lymphoid leukoses), immunity scarce conditions (got and congenital), autoimmune diseases.

Pathogenesis. Substrate of a tumour - huge cells and large uninuclear cells. The first are diagnostic, that is the diagnosis of a lymphogranulomatosis establish only at their detection. The biological nature of these cells finally is not clear, though it is known, that in most cases they contain clonal reorganizations of genes of immunoglobulins (IgV) with traces of a somatic hypermutation that corresponds to a lymphocyte of the terminal center of a secondary follicle of a lymph node.