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[Ultrastructure of malignant non-Hodgkin lymphomas].

Ultrastructural characteristic features of non-Hodgkin malignant lymphomas-based on the analysis of 51 cases are dealt with. It is concluded, that ultrastructural changes of lymphomas can be correlated with the light microscopic findings and tumours arising from T and B cells can be distinguished also on the ultrastructural level. Electron microscopy should be regarded as an additional method in classification and differential diagnosis of non-Hodgkin malignant lymphomas. It contributes to a more exact diagnosis and clarifying the histogenesis of these tumours.