Abstract
Two hundreds and sixty five cases of non-Hodgkin's lymphomas were studied clinicopathological, with an emphasis on old age group.
Non-Hodgkin's lymphomas of the old age group represented the following characteristics: 1) much more medium sized cell type in diffuse lymphomas, 2) much more B cell lymphomas, 3) relatively low incidence of leukemic change, 4) poor prognosis.
In therapy of malignant lymphomas of old age group, these four characteristics should be taken note.