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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Pediatric surgery international 15 (1999), S. 437-439 
    ISSN: 1437-9813
    Keywords: Key words Joint chondromatosis ; Recurrence ; Differential diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A case of chondromatosis of the upper ankle joint in childhood is described. It is a monoarticular disease with a good prognosis, frequently without known prior trauma or inflammation, although often free fragments of cartilage are seen in the joint cavities. It originates from the synovium of the joint, and is known in the literature as Reichel syndrome.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 370 (1976), S. 273-289 
    ISSN: 1432-2307
    Keywords: Bone marrow biopsy ; Hairy cell leukemia ; Differential diagnosis ; Myelofibrosis ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 24 patients with hairy cell leukemia, histological and fine structural findings from biopsies of the bone marrow are reported and their validity is compared with other diagnostic procedures available. Diagnosis by light microscopy of anterior iliac crest biopsies obtained by the method of myelotomy is possible with a high degree of accuracy. The differentiation of hairy cell leukemia from other myelo- or lymphoproliferative disorders based on cytomorphology as well as patterns of growth is emphasized. Morphological differences between fibrosis in this entity and other lesions such as malignant lymphomas, Hodgkin's disease, osteomyelofibrosis and -sclerosis are emphasized. Electron microscopy of the bone marrow shows single fibroblastic cells with numerous slender cytoplasmic processes randomly dispersed among the hairy cells. These fibroblasts are probably responsible for the synthesis of the reticulin and collagen fibres in their surroundings. Moreover fine structure of the hairy cells demonstrates pinocytic activity but no apparent phagocytosis in contrast to the phagocytic reticulum cells (histiocytes, macrophages). In the bone marrow the precursor cells and the many immature forms of hairy cells exhibit an overall lymphocytoid appearance during their maturation, suggesting a lymphocytic origin.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Der Pathologe 16 (1995), S. 106-119 
    ISSN: 1432-1963
    Keywords: Schlüsselwörter Maligne Lymphome ; Fokale reaktive lymphoide Hyperplasie ; Knochenmark ; Differentialdiagnose ; Histotopographie ; Fasergehalt ; Immunhistochemie ; Key words Malignant lymphomas ; Reactive lymphoid hyperplasia ; Bone marrow ; Differential diagnosis ; Histotopography ; Fiber content ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The purpose of this study was to provide criteria for the differentiation of reactive lymphoid hyperplasia (RLH) and focal involvement of the bone marrow by malignant lymphoma (ML). Using trephine bone-marrow biopsy specimens embedded in paraffin wax and unequivocally established samples with ML for comparison, all patients with questionable lymphoid or lymphohistiocytic marrow aggregates were re-examined, together with obviously reactive lesions. Following this procedure, a number of characteristics were found that differed in validity with regard to diagnosis. In addition to cytology, which is preferably assessed in Giemsa-stained specimens and evaluated by the Kiel classification, histotopography, fiber content, and immunohistochemical reactions are the most valuable tools for differential diagnosis. RLH is consistent with a central-perivascular localization, a distinctive border and the presence of germinal centers, no or only minimal reticulin fibrosis and a polyclonal reaction pattern with a mixed population of B- and T-lymphocytes, following staining with appropriate antibodies. In uncertain cases (i. e., extensive lymphoproliferations in HIV-myelopathy) the results of immunohistochemical staining are of definite importance for the diagnostic evaluation of these lesions.
    Notes: Zusammenfassung Die vorliegende Studie verfolgt das Ziel, Kriterien für die differentialdiagnostische Abgrenzung zwischen fokaler reaktiver lymphatischer Hyperplasie (RLH) und nodulären Infiltraten von malignen Lymphomen (ML) im Knochenmark festzulegen. Im Vergleich zu klinisch und histologisch gesicherten Fällen von ML und offensichtlich reaktiven Veränderungen wurden alle in ihrer diagnostischen Zuordnung fraglichen lymphoiden bzw. lymphohistiozytären Läsionen anhand von Beckenkammbiopsien nach Paraffineinbettung noch einmal untersucht. Als wesentliches Ergebnis konnte eine Reihe von diagnostischen Merkmalen herausgearbeitet werden, die allerdings von sehr unterschiedlicher Wertigkeit waren. Neben der Zytologie, welche besonders gut in nach Giemsa gefärbten Präparaten auswertbar ist und sich problemlos nach den entsprechenden Maßgaben der Kiel-Klassifikation zuordnen läßt, sind Histotopographie, Fasergehalt und Immunhistochemie von besonderer nosologischer Bedeutung. Für eine RLH sprechen eine zentral-perivaskuläre Lokalisation mit scharfer Abgrenzung sowie Keimzentren, keine oder allenfalls eine minimale Retikulinfibrose sowie schließlich nach Anwendung immunhistochemischer Verfahren ein polyklonales Reaktionsmuster mit einer Mischpopulation aus B- und T-Lymphozyten. Im Zweifelsfall (z. B. bei ausgedehnter Lymphoproliferation im Rahmen einer HIV-Myelopathie) ist alleine die Immunhistochemie in der Lage, diagnostisch wegweisende Anhaltspunkte zu geben.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 389 (1980), S. 369-380 
    ISSN: 1432-2307
    Keywords: Angioimmunoblastic lymphadenopathy ; Bone marrow involvement ; Histopathology ; Differential diagnosis ; Prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 23 cases of angioimmunoblastic lymphadenopathy (AILAP) diagnosed by lymph node biopsy were investigated with regard to bone marrow involvement, using plastic embedding technique. 14 patients (61%) out of 23 displayed a granuloma-like focal or extended infiltrate, predominantly in the center of the bone marrow spaces. This lesion contained lymphocytes, plasma cells, histiocytic reticulum cells and sometimes immunoblasts with whorls of arborizing vessels and increased reticulin fibers. The different types of cellular infiltration in lymph nodes in AILAP are not encountered in bone marrow. Further, there is only a relatively slight increase of vessels which are not always as thick-walled in the bone marrow as in the lymph nodes of AILAP patients. 7 out of 14 (50%) cases with marrow involvement died with recurring lymphomas and infiltration of liver and spleen after 4 to 54 months after the first biopsy. This demonstrates the unfavorable clinical outcome of AILAP with bone marrow infiltration, since only 2 of 9 patients (22%) without marrow involvement at the time of biopsy have died to date: one had toxic heart failure following chemotherapy and another developed septicaemia. Early marrow lesions of Hodgkin's disease and granulomas in hyperergic myelitis of rheumatic origin have a very similar appearance and may therefore be confused with AILAP infiltrates. Histopathology of lymph nodes is therefore an essential requirement in differentiating between these disorders. The outstanding value of bone marrow biopsy in AILAP-patients is firstly, in staging the disease and secondly, in early recognition of systemic spread connected with an unfavorable prognosis.
    Type of Medium: Electronic Resource
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