CYTOLOGY OF CARDIAC MYXOMAS - PRESENCE OF ULEX-EUROPAEUS AGGLUTININ-I(UEA-I) LECTIN BY IMMUNOPEROXIDASE STAINING

Cytological findings are presented of seven cases of cardiac myxomas. Avidin-biotin-peroxidase complex (ABC) method was employed to demonstr ate Ulex europaeus agglutinin-I (UEA-I) lectin in imprint smears as we ll as in paraffin-embedded tissue sections in cardiac myxomas. The cyt ology was characterized by tumor cells with polyhedral or stellate and mucinous background with lymphocytes, neutrophilles, and hemosiderin- laden machrophages. In smears as well as tissue sections, UEA-I lectin was detected throughout the cytoplasm of myxoma cells. This study est ablished the applicability of the immunoperoxidase staining for cardia c myxoma as an aid in cytopathological diagnosis. (C) 1993 Wiley-Liss, Inc.