[Immunopathology of malignant lymphomas (author's transl)].

The present work deals in a first part with the functional characterization of subpopulations of the lymphoid system. Methods for identification of these subpopulations are compared and some immunopathologic data of the different non-Hodgkin's lymphomas are presented. In the group of low-grade malignant lymphomas B-cell disorders predominate, whereas lymphomas of the T-lymphocytes are not unusual in patients with lymphoid tumors of high malignancy. Immunological findings are compared with data on tumor cell kinetics and the clinical relevance of immunopathological investigations is discussed.