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  • 1
    Electronic Resource
    Electronic Resource
    Mycosis fungoides: model for T-lymphocyte homing to the skin? (1976)
    Oxford, UK : Blackwell Publishing Ltd
    British journal of dermatology 94 (1976), S. 0 
    Details
    ISSN: 1365-2133
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2133.1976.tb04374.x
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  • 2
    Electronic Resource
    Electronic Resource
    Monocytoid B-cell lymphoma: morphological variants and relationship to low-grade B-cell lymphoma of the mucosa-associated lymphoid tissue (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 18 (1991), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Twenty-eight cases of monocytoid B-cell lymphoma of lymph nodes and 16 lymph node metastases of primary gastric lymphomas, mostly low-grade B-cell lymphomas of mucosa-associated lymphoid tissue (MALT) type were investigated morphologically and immunohistochemically. Both groups showed the same morphological and immunohistochemical features: diagnostically important sites of infiltration were the sinuses and the marginal zones, The tumour cells were either medium-sized or small. The cytoplasm stained grey with Giemsa and was sometimes rather pale. In imprints the grey colour of the cytoplasm was a characteristic feature. The medium-sized cell type was more frequent; in one third of the cases it was combined with a prominent lymphoplasmacytic component from the same clone, and it resembled the monocytoid B-cells of the sinuses. The small cell type was less common, was not combined with a lymphoplasmacytic component and more closely resembled marginal zone cells. The difference was underlined by the negative reaction with the monoclonal antibody Ki-B3 in the small cell type, which, conversely, was positive in the medium-sized cell type and in the monocytoid B-cell reaction of the sinuses. Both of these cell types, however, showed a granular reaction with the new monoclonal antibody Ki-Mlp. The morphological and immunohistochemical parallels are arguments in favour of the assumption that monocytoid B-cell lymphoma is the nodal equivalent of low-grade B-cell lymphoma of MALT type. This is further supported by the fact that in nine of our 28 cases of monocytoid B-cell lymphoma, lymphomas were found simultaneously or subsequently in organs of the MALT. Monocytoid B-cell lymphoma must be differentiated from an infiltration that occurs in the form of clusters of monocytoid B-cells in other low-grade B-cell lymphomas, especially in immunocytoma with a high content of epithelioid cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1991.tb00870.x
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  • 3
    Electronic Resource
    Electronic Resource
    Primary lymphomas of the lung: morphological, immunohistochemical and clinical features (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 16 (1990), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Sixty-two cases of primary malignant lymphoma of the were investigated. Fifty-eight lymphomas were of B- and two of T-cell type. Two cases of high-grade homa could not be further classified. The largest group (43 cases) consisted of low-grade B-cell lymphoma of the bronchus-associated lymphoid tissue. These showed features similar to low-grade B-cell lymphomas of the mucosa-associated lymphoid tissue of the stomach. The low-grade lymphomas showed a peak occurrence in the sixth decade, the high-grade lymphomas in venth decade. Males predominated slightly. Three-quarters of the patients with low-grade B-cell lymphoma of the bronchus-associated lymphoid tissue showed solitary or multiple sharply defined nodules of the lung. The prognosis of the B-cell-derived lung lymphomas without constitutional symptoms was relatively favourable, regardless of whether they were of low- or high-grade malignancy, whereas patients with constitutional symptoms and the two patients with T-cell lymphomas showed a bad prognosis. However, recurrences and metastases in the lung, stomach, lymph nodes and salivary glands were seen in about 46% of the cases of low-grade B-cell lymphoma of the bronchus-associated lymphoid tissue.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1990.tb01157.x
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  • 4
    Electronic Resource
    Electronic Resource
    Monoclonality and polyclonality of plasma cells in Castleman's disease of the plasma cell variant (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 14 (1989), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Castleman's disease of the plasma cell variant observed in 21 patients was investigated morphologically and by immunohistochemistry. The male to female ratio was 2.5:1. The age ranged from 18 to 71 years (mean age 47.6 years). Histologically, the lesions were characterized by numerous, evenly distributed germinal centres ranging from large hyperplastic to small hyaline-vascular types with moderate to extensive sheets of plasma cells in between. In all cases with generalized lymph node enlargement dilated sinuses could be found. Immunohistochemical studies demonstrated a polyclonal plasma cell population in 11 of 18 lesions. Seven lesions contained a monoclonal plasma cell population, five with IgG/lambda and two with IgA/lambda; clinically, two of these patients had generalized lymphadenopathy; in none could manifestation of a plasmacytoma be found outside the lymph node lesion: only two of the seven patients exhibited a paraproteinaemia (IgG/lambda and IgA/lambda, respectively) corresponding to the Ig type of the proliferated plasma cells. Six patients with polyclonal lesions had constitutional symptoms such as fever, anaemia, polyclonal hypergamma-globulinaemia; one of these six patients manifested symptoms consistent with a diagnosis of Takatsuki syndrome. The monoclonal plasma cell type of Castleman's disease did not progress to a generalized disease. This monoclonal variant may be a lymph node-based type of benign monoclonal gammopathy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1989.tb02110.x
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  • 5
    Electronic Resource
    Electronic Resource
    Bacterial lymphadenitis with the picture of a lymphoepithelioid cell lymphoma—Lennert's lymphoma (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 14 (1989), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Three cases with the typical light microscopic picture of lymphoepithelioid cell lymphoma (so-called Lennert's lymphoma) were investigated by electron microscopy. Surprisingly, Lennert's lymphoma could be excluded in two cases. These two cases exhibited, in addition to pleomorphic lymphocytes and epithelioid cells, macrophages with accumulations of bacteria, indicating that a bacterial infection was the cause of the disease. By comparing the typical case of Lennert's lymphoma with the other cases, we found several criteria for distinguishing between Lennert's lymphoma and bacterial lymphadenitis. In bacterial lymphadenitis: (1) small and medium-sized lymphocytes exhibited a wide cytological spectrum whereas the lymphocytes in Lennert's lymphoma were relatively uniform; the lymphocytes with prominent lysosome-like granules found in Lennert's lymphoma were not seen; (2) cytology and distribution of epithelioid cells were similar to those in Lennert's lymphoma; (3) epithelioid venules contained recirculating lymphocytes, which were rarely found in Lennert's lymphoma; (4) numerous interdigitating reticulum cells, fibroblasts and myofibroblasts were seen, but not in Lennert's lymphoma; (5) focal increase in reticulin fibres was the main difference in light microscopy; (6) rod-shaped bacteria were accumulated in the cytoplasm of a few macrophages. The presence of bacteria could not be demonstrated unequivocally by light microscopy. In both cases the large number of intracytoplasmic bacteria suggests that this unusual and until now unknown lymphadenitis is the result of an infection caused by facultative intracellular parasitic bacteria. The outcome of bacterial lymphadenitis that gives the false impression of Lennert's lymphoma is uncertain. Cure was achieved in one of our cases. The other patient died before therapy was commenced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1989.tb02126.x
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  • 6
    Electronic Resource
    Electronic Resource
    Morphological and immunohistochemical investigation of non-Hodgkin's lymphoma combined with Hodgkin's disease (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 15 (1989), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Twenty cases with a morphological picture highly suspicious for a combination of non-Hodgkin's lymphoma and Hodgkin's disease were investigated. The infiltrates of Hodgkin's disease differed from those of non-Hodgkin's lymphoma in their cellular component of Hodgkin and Sternberg-Reed cells and the irregularity in the fibre pattern. Based upon histological and immunohistochemical criteria the 20 cases were divided into three groups. Group 1 (n = 10) contained seven chronic lymphocytic leukaemias of B type, one lymphoplasmacytoid immunocytoma, and two centroblastic/centrocytic lymphomas. The non-Hodgkin's lymphoma components showed a monotypic immunoglobulin distribution pattern and/or leukaemic blood picture. Adjacent to the non-Hodgkin's lymphoma was typical Hodgkin's disease in which Hodgkin and Sternberg-Reed cells were positive for both immunoglobulin light chains and IgG and reacted with anti-CD15. Group 2 (n = 5) consisted exclusively of centroblastic/centrocytic lymphoma in combination with Hodgkin's disease in which the few Hodgkin and Sternberg-Reed cells were negative with anti-CD15 monoclonal antibody. Group 3 (n = 5) consisted of four chronic lymphocytic leukaemias of B type and one lymphoplasmacytoid immunocytoma. In these cases no combination with Hodgkin's disease could be diagnosed apart from the presence of partially CD15 positive Hodgkin and Sternberg-Reed cells. The following conclusions were drawn: anti-CD15 (LeuM1 and 3C4/C3D-1) can neither confirm nor exclude Hodgkin's disease since, while they do not detect Hodgkin and Sternberg-Reed cells in all cases of Hodgkin's disease, they do recognize Hodgkin and Sternberg-Reed cells in some B-cell lymphomas; anti-CD30 (Ber-H2) reacted with Hodgkin and Sternberg-Reed cells in all cases of Hodgkin's disease and also detected these cells in cases of non-Hodgkin's lymphoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1989.tb03039.x
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  • 7
    Electronic Resource
    Electronic Resource
    Lymph node findings in generalized mastocytosis (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 21 (1992), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Lymph nodes from 21 cases of generalized mastocytosis were studied histologically to confirm or exclude mast cell infiltration, and to investigate their micro-architecture. Mast cell infiltrates were detected in 17 (80%) of the lymph nodes and were found mainly in the medullary cords and sinuses. Diffuse infiltration was seen in 14 cases and focal infiltration in three cases. The following pathological findings were frequently observed: germinal centre hyperplasia (n= 14), which is probably a nonspecific finding; and hyperplasia of small blood vessels, which sometimes resembled high endothelial venules (14), eosinophilia (8), plasmacytosis (7) and collagen fibrosis (6), all of which may well be related to the effects of mediators released by mast cells. Infiltrates of acute or chronic myeloid leukaemia were seen in six lymph nodes. Division of the cases into two prognostically different groups, i.e. systemic mastocytosis, in which the skin lesions of urticaria pigmentosa are present and the prognosis is favourable, and malignant mastocytosis, in which there is no cutaneous involvement and the prognosis is poor, revealed that all six lymph nodes exhibiting leukaemic infiltrates came from the malignant mastocytosis group; eosinophilia, plasmacytosis and fibrosis were seen significantly more often in malignant than in systemic mastocytosis, but blood vessel hyperplasia and germinal centre hyperplasia were encountered with the same high frequency in both groups; and mast cell atypia tended to be more pronounced in malignant mastocytosis; this diagnosis could therefore easily be missed without naphthol AS-D chloroacetate esterase staining. In four lymph nodes no mast cell infiltrates could be detected, although two of these exhibited eosinophilia, plasmacytosis and fibrosis. As only one example of the lymphadenopathic variant of generalized mastocytosis was found amongst 181 archive and published cases reviewed, this would appear to be very rare.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1992.tb00428.x
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  • 8
    Electronic Resource
    Electronic Resource
    Mast cells and mast cell neoplasia: a review (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 3 (1979), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1979.tb03017.x
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  • 9
    Electronic Resource
    Electronic Resource
    The proposal for a Revised European American Lymphoma classification—a new start of a transatlantic discussion (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 26 (1995), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1995.tb00261.x
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  • 10
    Electronic Resource
    Electronic Resource
    Immunohistology and aetiology of histiocytic necrotizing lymphadenitis. Report of three instructive cases (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 7 (1983), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Three cases of histiocytic necrotizing lymphadenitis are reported. Two patients came from Vietnam and the third from Greece. In all cases there was infection with Yersinia enterocolitica of serogroup 9 or 3. Cervical lymph nodes were examined. Histologically, the characteristic necrosis developed in large foci of so-called T-associated plasma cells. Immunological analysis showed that these cells have characteristic markers of helper/inducer T cells, but do not express sheep erythrocyte receptors. The T-associated plasma cells perished by pyknosis and were then phagocytosed and digested by macrophages, which were present in large numbers. The necrotic areas were exclusively located in hyperplastic T regions. The B-cell system did not play a role in the reaction. T-associated plasma cells have been renamed ‘plasmacytoid T cells’ because they contain abundant rough endo-plasmic reticulum (‘plasmacytoid’) and show immunological features of T cells. It appears likely that plasmacytoid T cells are the counterparts of plasma cells of the B-cell system that secrete lymphokines instead of immunoglobulin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1983.tb02299.x
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