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  • Title: [Cytodiagnosis of malignant non-Hodgkin's lymphomas in effusions (author's transl)].
    Author: Wünsch PH, Müller HA.
    Journal: Virchows Arch B Cell Pathol Incl Mol Pathol; 1981; 36(2-3):275-90. PubMed ID: 6116340.
    Abstract:
    Body cavity effusions in malignant non-Hodgkin's lymphomas, particularly in the early stages of those neoplasms, are rare in comparison to the far more common effusions in other malignant diseases and in inflammatory processes. Therefore, the cytological differential diagnosis is of great importance. Of 7,000 pleural and 1,700 ascitic effusions, only 42 cases were malignant non-Hodgkin's lymphoma and in 30 lymphoma was suspected. When lymphoma is suspected, particularly low-grade lymphoma, there are great difficulties in making a differential diagnosis. Using the more or less typical cellular and nuclear criteria of the various lymphoma types, an attempt was made to classify the unequivocal lymphomas according to the Kiel classification of malignant non-Hodgkin's lymphomas. In principle these criteria are the same in cytological and histological examinations. In 31 cases the lymphoma subtype could be specified and confirmed in part by subsequent histological examination. Apart from the suspect lymphoma cases (40%), cases of a low grade of malignancy were predominantly observed (28%). Lymphomas with a high grade of malignancy were less frequently encountered (15%), a proportion similar to that of unclassifiable lymphomas (16%). Apparently the cytological and karyological criteria are not yet adequate to classify lymphomas from conventionally prepared cytological specimens with a higher degree of accuracy.
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