[Persistent atypical epitheloid component of malignant lymphomas]

Three cases of immunoblastic B sarcoma were found in a group of 38 patients suffering from lymphoepitheloid malignant lymphoma where atypical epitheloid cells did not occur temporarily. Taking some morphological and even histochemical features of tumour cells they reminded of hybrid forms. This stimulating finding was difficult to explain. Persons in the study were of higher age, case histories showed high grade malignancy with a rather good reaction to cytostatic treatment. The picture is to be followed further as a subunit isolated from the wide rank of lymphoepitheloid malignant lymphoma.