ACTIVITIES OF ADENOSINE-TRIPHOSPHATASE (ATPASE) AND ALPHA-NAPHTHYL-ACETATE-ESTERASE (ANAE) IN 24 CASES OF LYMPHOPLASMACYTOID LYMPHOMA (IMMUNOCYTOMA)

Abstract

Twenty four cases of lymphoplasmacytoid lymphoma (immunocytoma) were examined by using ATPase and ANAE stains of the lymph node imprints. Neoplastic lymphocytes and lymphoplasmacytoid cells were shown constantly high percentage positivity of ATPase stain and it was not correlated with the degree of plasma cell differentiation. As previously reported, the same tendency of ATPase positivity in immunocytoma was obtained, as those of CLL of B cell type and lymphoma derived from follicle center cell. By combined method with ANAE stain, ATPase stain is a useful method in order to investigate malignant lymphomas of B cell origin.