Abstract
We report the cytogenetic results in three cases of B-cell non-Hodgkin's lymphomas with morphologic and immunophenotypic features compatible with a non-follicle center cell lymphoma. In all cases, a chromosome breakpoint at 14q32 and structural abnormalities of 1p were found. Increased copies of chromosome segment 12q and structural rearrangements of chromosome 6 were found in two cases. Translocation (14;18)(q32;q21) with rearrangement of bcl-2 was found in one case. These lymphomas have a perifollicular growth pattern and IgM+, IgD+, CD10−, and CD22+ immunophenotype features typical of non-follicle center cell lymphomas and probably belong to the follicle mantle lymphomas described recently [1]. Little cytogenetic data about this group of lymphomas is available, possibly because in the Working Formulation for the Classification of Lymphomas they are not separated from follicle center cell lymphomas.
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