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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 415 (1989), S. 429-436 
    ISSN: 1432-2307
    Keywords: Hodgkin's disease ; Immunohistochemistry ; Microenvironment ; Spleen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Hodgkin's disease in the spleen - with the exception of its B cell variant - behaves quite differently from non Hodgkin's lymphomas with respect to both its spread and microenvironment. Each type of HD appears to create its own microenvironment by the secretion of cytokines responsible for the characteristic cellular composition of the infiltrates and thereby alters the normal immunoarchitecture of the spleen profoundly. While some histological findings seem to imply the presence of a host response against HD especially in the nodular sclerosis subtype, morphological and immunohistochemical evidence in the spleen cannot conclusively substantiate this hypothesis.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 411 (1987), S. 179-183 
    ISSN: 1432-2307
    Keywords: Cirrhosis of the liver ; Extramedullary haematopoiesis ; Spleen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Hitherto it has generally been assumed that splenic haematopoiesis in adult humans occurs very infrequently and is predominantly associated with haematological disorders. In the present study of patients with cirrhosis of the liver, a marked splenic haematopoiesis was a constant finding. Moreover, low-level splenic erythro- and granulopoiesis was highly prevalent even in haematologically normal controls, while splenic thrombopoiesis was conspicuously absent in both groups. We suggest that splenic haematopoiesis results from entrapment and proliferation of circulating haematopoietic precursor cells in the splenic red pulp. This would account for the presence of splenic haematopoiesis in normal controls as well as in patients with cirrhosis of the liver. In the latter, stimulation of bone marrow haematopoiesis and increased splenic pooling of haematopoietic precursor cells may contribute to the marked increase of splenic haematopoiesis observed.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 35 (1977), S. 317-322 
    ISSN: 1432-0584
    Keywords: Spleen ; Thrombocytopenia ; Vinylchloride disease ; Milz ; Thrombozytopenie ; Vinylchlorid-Krankheit
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die Thrombozytopenie stellt bei der Vinylchlorid-Krankheit oft ein Frühsymptom dar. Sie ist auf Grund morphologischer Untersuchungen als splenogen anzusehen. Hierbei spielt neben einer Splenomegalie ein Umbau der Struktur der Filtrationsräume in der roten Pulpa mit Veränderung der Mikrozirkulation eine entscheidende Rolle. Diese Faktoren bewirken durch vermehrte Speicherung und gesteigerten Abbau eine Verminderung der Thrombozytenzahlen im peripheren Blut.
    Notes: Summary Thrombocytopenia is often one of the first signs of vinylchloride disease. Morphological investigations showed that it is caused by splenic alterations. Besides splenomegaly, there are significant structural changes in the red pulp cords affecting the microcirculation. These quantitative and qualitative alterations cause increased platelet pooling and increased destruction of platelets, which result in a decrease in thrombocytes in the peripheral blood.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 151 (1974), S. 337-342 
    ISSN: 1432-0878
    Keywords: Spleen ; Sinus lining cells ; Desmosomes ; Intercellular junctions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 13 normal and pathological human spleens were studied by electron microscopy. In four cases (1 chronic myeloid leukemia, 1 haemolytic anaemia, 1 idiopathic thrombocytopenic purpura, 1 traumatic capsular lesion) intercellular junctions between sinus lining cells were found. These included tight junctions, “close junctions”, and intermediate junctions. There were no desmosomes. Such intercellular junctions have not been observed previously in human spleens and occur only rarely. They are thus unevenly distributed. This indicates that they probably do not impede the migration of cells through the sinus wall.
    Type of Medium: Electronic Resource
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