paraffin sections of 221 cases of poorly differentiated or undifferentiated npc and malignant lymphomas were analysed by immunohistochemical techniques ( igss , abc , double stain , etc . ) , the immunohistochemical criteria of differential diagnosis between npc and malignant lymphomas were proposed and with these criteria , 40 cases which were difficult to distinguish between npc and malignant lymphoma were identified .
C0027442
npc
C2931822
npc