Autoimmune hemolytic anemia with warm antibodies complicated with an intercurrent attack of hemolysis with cold agglutinins in a case of Waldenström disease.

The paper presents a case of autoimmune hemolytic anemia (AIHA) with warm IgG antibodies associated with Waldenström's disease in which in the stage of compensated hemolysis after treatment, there appeared a severe hemolytic attack induced by transitory cold agglutinins with high thermal amplitude. The case described is a novelty by the intrication of two autoantibody populations which causes autoimmune hemolysis. The difference from other similar associations is discussed.

A particular case of large granular lymphocytes lymphoma.

A patient with non-cutaneous lymphocytic lymphoma with leukaemic spread is reported. The large majority of the peripheral blood mononuclear cells formed rosettes with sheep erythrocytes (E), had receptors for the Fc portion of IgG (Fc gamma R) and displayed an unusual enzymatic profile. Part of these cells had also labile bound surface membrane IgG.

[Acute lymphoblastic Ph1-positive leukemia with a hybrid phenotype. The significance of the Ph1 anomaly and the hybrid phenotype].

The present paper reports on a case of acute lymphoblastic leukemia with t(9q+; 22q-) and surface markers specific of the B and T lymphoid line (hybrid phenotype). The fundamental (genotypical and phenotypical) and practical aspects (nosologic and therapeutical aspects) of this particular subtype of Ph1-positive acute leukemia and hybrid phenotype are discussed.

Polycythemic blood perfusions in severe aplastic anemia.

The course of two cases of severe aplastic anemia (AA) was followed up in two young male patients who, besides the conventional therapy, received perfusions with blood obtained from patients with polycythemia vera (PV). Case 1 received 4 units of PV blood from a unique donor. During the following week an obvious clinical relief, as well as increase of the peripheral blood values were recorded.

Present-day problems of diagnosis and treatment in the idiopathic thrombocytopenic purpura.

A review is made of the data in the literature and of the authors' experience regarding the etiology and pathogenesis, diagnosis and therapy of the chronic form of idiopathic thrombocytopenic purpura (ITP). The mechanisms of production (after McMillan et al.) are presented schematically and the five criteria of ITP diagnosis suggested by Karpatkin are discussed: 1) decreased blood platelet count with direct or indirect signs of thrombocytolysis; 2) increased number of megakaryocytes in the bone marrow and/or signs of intramedullary thrombocytolysis; 3) direct or indirect signs of antiplatelet autoantibody presence in the plasma; 4) exclusion of a primary disorder and 5) absence of splenomegaly.

A preventive therapy of the central nervous system complications in acute leukemias. Preliminary report.

A new therapeutic schedule for preventive therapy of the central nervous system (CNS) complications by intrathecal (i.t.) injections of methotrexate (MTX) was applied in two groups of 6 and respectively 13 adults with acute lymphoblastic or non-lymphoblastic leukemias.

LAP negative and Ph1-positive hemorrhagic thrombocythemia.

Cytochemical and cytogenetic studies were carried out in 4 patients with chronic myeloproliferative disorders. These corresponded only partially to the clinical and hematologic criteria for the diagnosis of hemorrhagic thrombocythemia (HT), yet with a low leukocyte alkaline phosphatase (LAP) level and in the presence of the Ph1 positive 46, XX, mitoses. The authors discuss the significance of the presence of the Ph1 chromosome as well as the possibility of transition forms among chronic myeloproliferative disorders.