title: Multilobated B-cell lymphoma. Report of a case with immunocytologic diagnosis in pleural fluid.
abstract: The cytologic, histologic and immunocytochemical findings in an aggressive case of multilobated lymphoma in an 89-year-old man are described. This unusual variant of non-Hodgkin's lymphoma is morphologically distinct but may be of either T-cell or B-cell origin. A battery of immunocytologic stains on pleural fluid specimens allowed determination of a B-cell (follicular center cell) origin to be made. Previous literature on this neoplasm is briefly reviewed, and the unreliability of morphologic findings in predicting a T-cell or B-cell origin is discussed.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001402:B-Lymphocytes; D006801:Humans; D007150:Immunohistochemistry; D008223:Lymphoma / Q000150:complications / Q000276:immunology / Q000473:pathology*; D008297:Male; D010996:Pleural Effusion / Q000209:etiology / Q000276:immunology / Q000473:pathology*