[The problems in the histopathological classification of non-Hodgkin's lymphomas--with special references to T-cell lymphomas].

The problems of histopathological classification and diagnosis of non-Hodgkin's lymphomas on discussed with special refences to 1) the low-grade T-cell lymphomas which usually exhibit fairly specific features for T-cell characteristics both morphological and clinical aspects, and 2) some of the higher-grade categories of T-cell tumors.