Acute megakaryocytic leukemia (M7-AML) is a rare form of acute myeloid leukemia (AML), which is associated with poor prognosis. The case presented in the current report is a statement for the difficult diagnosis and clinical management of M7-AML in the context of a previous hematologic disorder of undetermined significance and associated genetic abnormalities. Probably, following the complete h...

Gaucher disease (GD) is the most common lysosomal storage disease resulting from mutations in the lysosomal enzyme glucocerebrosidase (GCase). The hematopoietic abnormalities in GD include the presence of characteristic Gaucher macrophages that infiltrate patient tissues and cytopenias. At present, it is not clear whether these cytopenias are secondary to the pathological activity of Gaucher ce...

Hematologic complications of HIV disease are commonly encountered by physicians and other health-care workers caring for patients infected with this virus. Ineffective hematopoiesis, infiltrative diseases of the bone marrow, nutritional deficiencies, peripheral destruction of blood cells secondary to splenomegaly or immune dysregulation, and drug effects all contribute to the variety of hematol...

Chromosome abnormalities are found in the vast majority of hematologic malignancies. A great number of these changes are very specific, and some unambiguously identify the nature and type of the malignant disorder in which they are found. The purposes of this paper are ( a) to update the list of characteristic chromosome changes occurring in human hematologic neoplasia; (b) to bring together da...

Sjögren's syndrome (SS) is a chronic autoimmune disorder, primarily characterized by the mononuclear cell infiltration of exocrine glands exiting in parenchymal damage and secretory impairment. The spectrum of the disease extends from an autoimmune exocrinopathy to a systemic process with extraglandular manifestations. SS is defined as primary (pSS) when isolated, or secondary when associated w...

Cerebellar hemangioblastoma is a rare cause of secondary erythrocytosis. Although the erythrocytosis is a result of erythropoietin (Ep) stimulation, direct evidence of Ep synthesis by the tumor has been lacking. In an erythrocytotic patient with a cerebellar hemangioblastoma we found elevated levels of Ep in the tumor cyst fluid and for the first time demonstrated Ep mRNA in the tumor by Northe...